Overview of latest WiFi technologies and test solution

Transcription

1 Overview of latest WiFi technologies and test solution 2016, Sep Brian Su Sr. Project Manager

2 Wireless: 1990 to Beyond 2020 Cellular WLAN Increasing efficiency, bandwidth and data rates 2G 2.5G 3G 3.5G 3.9G 4G 5G PDC (Japan) imode W-CDMA (FDD & TDD) HSDPA HSUPA HSPA+ / E-HSPA HSCSD GSM (Europe) TD-SCDMA (China) EDGE Evolution GPRS LTE (R8/9 FDD/TDD) LTE-Adv. (R10 and beyond) IS-136 (US TDMA) E-GPRS (EDGE) 1x EV-DO 0 A B e (Mobile WiMAX) m / WiMAX2 IS-95A (US CDMA) IS-95B (US CDMA) cdma2000 (1x RTT) d (Fixed WiMAX) WiBRO (Korea) ax b a/g h/n ac ad Technology evolution Market evolution Page 2

3 WLAN Market Growth Drivers Integration of WLAN into more consumer products Smartphones, digital cameras, e-readers, media players, gaming consoles, Blu-ray players, HDTVs Increasing adoption and use of WLAN in the Enterprise BYOD: Enterprise shift toward use of tablets and smartphones Use of WLAN to offload data from cellular networks Up to 65% of mobile data traffic can be offloaded to Wi-Fi Multi-media Sharing and Streaming Displays, TV, Upload/Downloads, Printing, Camera, Gaming The Internet of Things - New applications keep coming Health/fitness, medical, smart meters, home automation, M2M IEEE Overview Page 3

4 Wi-Fi Market Momentum Wi-Fi products sold at the end of 2014 Over 10B* Wi-Fi chipset shipped in 2014 More than 2.3B* Number of Wi-Fi hotspots worldwide Wi-Fi Enabled Devices Shipped* (In Million of Units) Million (2018) Phones/Accessories 685 1,459 Tablets, E-Readers, Media Players Laptops, Desktops, Peripherals Connected Home Million (2013) Others TOTAL ,161 Source: Maravedis-Rethink, 2013 *Wi-Fi shipment & Expanding Device Support Source: ABI Research, 2012, 2013, 2014 Page 4

5 Wi-Fi s Opportunities Internet of things Tablet PCs Smartphones Personal computers Page 5

6 Wi-Fi Evolution Path and beyond 2.4 GHz a/b/g/j/p n 5 GHz a n ac 60 GHz ax ax p aj ad ay n Widely adopted and large installed base ac/ax Higher capacity, higher data rate for mobile, computing and CE devices p Wireless access in vehicular environment at 5.8/5.9 GHz aj China (59-64 & 45 GHz) ad/WiGig/ay Wireless docking, in-room wireless display, audio and more <1 GHz af ah ah Home/building automation, sensors and more af TV white space 6 Page

7 Exploiting the Physical Layer Enhancing and extending the mission of WLAN Bandwidth More hertz Spectrum Additional bands & channels Modulation Order More bits per symbol Error Correction Closer to Shannon Limit MIMO More spatial streams Beamforming IEEE Overview Page 7

8 Wi-Fi Evolution Path and beyond 2.4 GHz a/b/g/j/p n 5 GHz a n ac 60 GHz ax ax p aj ad ay n Widely adopted and large installed base ac/ax Higher capacity, higher data rate for mobile, computing and CE devices p Wireless access in vehicular environment at 5.8/5.9 GHz aj China (59-64 & 45 GHz) ad/WiGig/ay Wireless docking, in-room wireless display, audio and more <1 GHz af ah ah Home/building automation, sensors and more af TV white space 8 Page

9 Frequency Channels 2.4 GHz Band b (DSSS) 2.4 GHz 2.5 GHz Channel Width = 22 MHz Channel GHz Channel GHz Channel GHz Channel GHz g/n (OFDM) 2.4 GHz 2.5 GHz Channel Width = 20 MHz Channel GHz Channel GHz Channel GHz Channel GHz 2.4 GHz n (OFDM) 2.5 GHz Channel Width = 40 MHz Channel GHz Channel GHz IEEE Overview Page 9

10 Modulation and Coding Techniques Used in the Various Standards CCK Complementary Code Keying OFDM Orthogonal Frequency-Division Multiplex IEEE Overview Page 10

11 Review of n Feature Mandatory Optional Transmission method OFDM Channel bandwidth 20 MHz 40 MHz FFT size Data subcarriers / pilots 52 / / 6 Subcarrier spacing khz OFDM symbol duration 4 µs (800 ns guard interval) 3.6 µs (with 400 ns short guard interval) Modulation types BPSK, QPSK, 16QAM, 64QAM Forward error correction Binary convolutional coding (BCC) Low density parity check (LDPC) Coding rates 1/2, 2/3, 3/4, 5/6 MCS supported 0 to 7, 0 to 15 for access points 8 to 76, 16 to 76 for APs Spatial streams and MIMO Operating mode / PPDU format 1, 2 for access points direct mapping Legacy/non-HT (802.11a/b/g) Mixed/HT-mixed (802.11a/b/g/n) 3 or 4 streams Tx beamforming, STBC Greenfield/HT-Greenfield (802.11n only) Page 11

12 Wi-Fi Evolution Path and beyond 2.4 GHz a/b/g/j/p n 5 GHz a n ac 60 GHz ax ax p aj ad ay n Widely adopted and large installed base ac/ax Higher capacity, higher data rate for mobile, computing and CE devices p Wireless access in vehicular environment at 5.8/5.9 GHz aj China (59-64 & 45 GHz) ad/WiGig/ay Wireless docking, in-room wireless display, audio and more <1 GHz af ah ah Home/building automation, sensors and more af TV white space 12 Page

13 WLAN ac ac Standards Status: Minimum very high throughput goal of 1 Gbps Standard developed by IEEE ac Task Group and approved in Dec 11 th, 2013 Wi-Fi Alliance ac certification launched in ac Market Situation ac chipsets available from Broadcom, Qualcomm Atheros, MediaTek, Marvell, Intel, Quantenna etc. Some have already supported 3x3 and 4x4 MIMO ac routers now available from Asus, Belkin, Buffalo, D-Link, Netgear, and EDIMAX around $100. Products also support legacy a/b/g/n. Market research firms ABI Research and In-Stat expect ac products to start shipping by late 2012 and to grow rapidly, becoming the dominant Wi-Fi standard by 2015 IDC Research reported that in Q3 2014, ac represented 39% of WLAN revenues and 26.5% of access point shipments. Infonetics Research estimates that ac routers will represent 42% of all Wi-Fi routers shipped in Page 13

14 802.11ac Channelization Operates in 5 GHz band only, not in 2.4 GHz band Mandatory support for 20, 40, and 80 MHz channels 40 MHz same as n. 80 MHz has more than 2x data subcarriers: 80 MHz has 234 data subcarriers + 8 pilots vs. 108 data subcarriers + 6 pilots for 40 MHz Optional support for contiguous 160 MHz and non-contiguous MHz transmission and reception. 160 MHz tone allocation is the same as two 80 MHz channels. U.S. region frequency allocation (shown below) includes MHz channels not available elsewhere. (Need to avoid weather radars in some areas) These frequencies are not available in Europe, Japan and other regions 245 MHz Adapted from Specification Framework, IEEE /0992r15, Updated based on ac/D1.0 IEEE Overview Page 14

15 Changes & Enhancements for ac Feature Mandatory Optional Channel bandwidth 20 MHz, 40 MHz, 80 MHz 160 MHz, MHz FFT size 64, 128, Data subcarriers / pilots 52 / 4, 108 / 6, 234 / / 16 Modulation types BPSK, QPSK, 16QAM, 64QAM 256QAM MCS supported 0 to 7 8 and 9 Spatial streams and MIMO 1 2 to 8 Tx beamforming, STBC Multi-user MIMO (MU-MIMO) Operating mode / PPDU format Wider channels Higher-order modulation More spatial streams and antennas (up to 8) Multi-user MIMO Operation in 5-6 GHz band only (not in 2.4 GHz band) Items in red text below are changes compared to the n standard Very high throughput / VHT Data rates: Best case: 6.93 Gbps (160 MHz, 8 Tx, MCS9, short GI) Typical case: 1.56 Gbps (80 MHz, 4 Tx, MCS9) Page 15

16 Enhanced Multi-Antenna Techniques Path diversity Improves robustness Spatial multiplexing Transmit Diversity Receive Diversity Space-time block coding (STBC) X 1, X 2 -X 2, X 1 * y 1, y 2 Improves spectral efficiency and throughput Spatial division multiplexing MIMO Spatial multiplexing with Beamsteering X 1 y 1 Multi-user MIMO 4 streams, 3 users X 2 y 2 Increases signal robustness w/the added advantage of the improved throughput through spatial multiplexing MIMO Transmit Beamforming MIMO (4x2) Matrix MIMO and Beamforming Page 16

17 802.11ac Wave1 & Wave2 Wave 1 Wave 2 Channel BW 80 MHz 160 MHz MHz Spatial Streams Up to 4 Up to 8 MIMO Single-User (SU) Multi-User (MU) 1024QAM Data Rates Up to 1.3 Gbps Up to 6.9 Gbps ac Wave1 2013/ ac Wave2 2015/2016 Page 17

18 WLAN ax ax Taskgroup for High Efficiency WLAN (HEW) ax will represent the next generation of Wi-Fi technology. Background Need for improved performance in dense deployments Growing use of WLAN outdoors Need for Better support of real-time applications with improved power efficiency Focus on improving metrics that reflect user experience in typical conditions Taskgroup just started. Targets: Four times improvement in the average throughput per station in a dense deployment scenario. Maintaining or improving the power efficiency per station. Indoor and outdoor operations in frequency bands between 1 GHz and 6 GHz. Enabling backward compatibility and coexistence with legacy IEEE devices operating in the same band. Technologies: Uplink MU-MIMO, DL MU-MIMO, OFDMA, and 1024 QAM Key contributors: Qualcomm, Huawei, Intel, Broadcom Page 18

19 Changes & Enhancements for ax Channel bandwidth Feature ac ax 20MHz, 40MHz, 80MHz,160MHz, 80+80MHz 2.4G: 20MHz, 40MHz 5G:20MHz, 40MHz, 80MHz,160MHz, 80+80MHz FFT size 64, 128, 256, ,512,1024,2048 Sub-Carrier Spacing 312.5KHz KHz Modulation types Higher-order modulation More sub-carriers in the same BW Multi-user MIMO for both DL and UL Operation in both 2.4G and 5-6 GHz band Items in red text below are changes compared to the ac standard BPSK, QPSK, 16QAM, 64QAM,256QAM BPSK, QPSK, 16QAM, 64QAM,256QAM,1024QAM CP Length 0.4us(1/8), 0.8us(1/4) 0.8us(1/16),1.6us(1/8),3.2us(1/4) Symbol Length 3.2us 12.8us MCS supported 0 to 9 0 to 11 Spatial streams and MIMO 8x8,SU-MIMO, DL MU-MIMO 8x8,SU-MIMO, DL MU-MIMO, UL MU-MIMO, OFDMA Page 19

20 Multi-User Scenario for both DL and UL Source: Bellalta, Boris (2015). "IEEE ax: High-Efficiency WLANs," Page 20

21 OFDMA Resource Unit (RU) Min RU size with 26 Tones (~2M) Different RU size, 26, 52, 106, 242, 484, 996 Tones Source: IEEE, ax-ofdma-numerology-and-structure Page 21

22 WLAN p A Wi-Fi (IEEE p: Amendment 6, Wireless Access in Vehicular Environment (WAVE) based technology to support low latency, Vehicle-to- Vehicle (V2V) and Vehicle-to-Infrastructure (V2X) communication Vehicle broadcasts its position and velocity and receives broadcasts of neighboring road users Frequency range: GHz Main uses: Vehicle safety services Commerce transactions via cars Toll collection Traffic management The leaders are Cohda/NXP & Autotalks with their automotive specific chipsets, with much improved RX performance for the moving car use case. Qaulcom and Broadcom offer p variants of their standard chipsets. USA, China, Europe, Japan and Singapore are working towards hard/soft mandate or MOU for DSRC installation. Page 22

23 802.11p WAVE 1 /DSRC 2 Vehicular Environment Channel Allocation 3 1 Wireless Access for Vehicular Environment 2 Dedication Short Range Communication 3 High Availability and Low Latency IEEE Overview Page 23

24 The PHY difference between a and p Feature a p Frequency band 5.15 to GHz 5.85 to GHz Bit rate (Mbit/s) 6, 9, 12, 18, 24, 36, 48, , 2.25, 3, 4.5, 6, 9, 12, , 24, 27, 36, 48, 54 MHz Channel bandwidth 20 MHz 5/10/20 MHz FFT size Data Subcarriers Pilots Subcarriers 4 4 Subcarrier spacing KHz /156.25/312.5 khz OFDM symbol duration 4.0 us 16/8.0/4.0 us Guard interval 0.8 us 3.2/1.6/0.8 μs Preamble duration 16 us 64/32/16 us Modulation types BPSK, QPSK, 16QAM, 64QAM Coding rates 1/2, 2/3, 3/4 Source: IEEE Std TM Page 24

25 Wi-Fi Evolution Path and beyond 2.4 GHz a/b/g/j/p n 5 GHz a n ac 60 GHz ax ax p aj ad ay n Widely adopted and large installed base ac/ax Higher capacity, higher data rate for mobile, computing and CE devices p Wireless access in vehicular environment at 5.8/5.9 GHz aj China (59-64 & 45 GHz) ad/WiGig/ay Wireless docking, in-room wireless display, audio and more <1 GHz af ah ah Home/building automation, sensors and more af TV white space 25 Page

26 WLAN ad/aj 60GHz/45GHz ad MAC PHY standard was completed in 2013 Channel bandwidth of 2 GHz SC and OFDM PHY s Protocol Adaptation Layer specifications developed by the WiGig Alliance (WGA) A new study group for Next Generation 60GHz to start in July 2014 MIMO and Channel bonding likely to be included. Targeting speeds of up to 24 Gbps for a single channel, 100 Gbps for 3 channels aj is proposed to support operation in Chinese Milli-Meter Wave (CMMW) frequency bands including the 59-64GHz and 45GHz, which is unlicensed band in China. Key 5G project of 863 of China. Technical details of aj More close to ac; Add single carrier mode Support multiple antenna, up to 4 streams BW is up to 512MHz, ¼ of BW of ad Page 27

27 60 GHz Channel Plan by Region CWPAN (China) also planning GHz deployment TGaj (802.11aj) IEEE Overview Page 28

28 802.11aj - 45 GHz Frequency Band Frequency band: 42.3 to 47.0 GHz, 47.2 to 48.4 GHz Bandwidth: 1080 MHz, 540 MHz Frequency tolerance: Maximum transmit power at antenna port: 20dBm Maximum EIRP: 36dBm 42.3 GHz 47.0 GHz 47.2 GHz 48.4 GHz BW = 540 MHz CH 1 CH 2 CH 3 CH 4 CH 5 CH 6 CH 7 CH 8 CH 9 CH GHz GHz 47.53GHz GHz BW = 1080 MHz CH 1 CH 2 CH 3 CH 4 CH GHz GHz 47.8 GHz IEEE Overview Page 29

29 The Bigger Picture A BIG wireless pipe HD Computer Display And HD Multimedia Protocol Adaptation Layer (WDE 3 PAL) MAC/PHY Computer I/O, Peripherals, and Mobile Devices (WSD 4 PAL) Protocol Adaptation Layer (WBE 1 PAL) (WSE 2 PAL) 1 Wireless Bus Extension 2 Wireless Serial Extension 3 Wireless Display Extension 4 Wireless Secure Digital IEEE ad WGA MAC/PHY v1.2 is word-for-word identical to Approved IEEE ad final text (published in Dec 2012). Wi-Fi Alliance is responsible for 60 GHz MAC/PHY Certification Test WGA / WFA / VESA are collaborating in development of Wireless DisplayPort Page 30

30 Modulation and Coding Schemes (MCS) Key Points Very robust 27.5 Mbps Control Channel Variable Error Protection Variable Modulation Complexity - Hence EVM specs. from -6dB to -25dB Variable Data Rates - from 385 Mbps (MCS1) to Mbps (MCS24) Mandatory modes ensure all ad devices capable of at least 1Gbps Control (CPHY) MCS Coding Modulation Raw Bit Rate 0 1/2 LDPC, 32x Spreading π/2-dbpsk 27.5 Mbps Single Carrier (SCPHY) MCS Coding Modulation Raw Bit Rate /2 LDPC, 2x repetition 1/2 LDPC, 5/8 LDPC 3/4 LDPC 13/16 LDPC π/2-bpsk, π/2-qpsk, π/2-16qam 385 Mbps to 4620 Mbps Orthogonal Frequency Division Multiplex (OFDMPHY) MCS Coding Modulation Raw Bit Rate /2 LDPC, 5/8 LDPC 3/4 LDPC 13/16 LDPC OFDM-SQPSK OFDM-QPSK OFDM-16QAM OFDM-64QAM 693 Mbps to Mbps Low-Power Single Carrier (LPSCPHY) MCS Coding Modulation Raw Bit Rate RS(224,208) + Block Code(16/12/9/8,8) π/2-bpsk, π/2-qpsk Mbps to 2503 Mbps 60 GHz Solutions Page 31

31 WARNING : Exi t V SA So ftwar e bef ore chang ing i nstru ment setup 60 GHz PHY Test Solution: Signal Path Interconnect Connect 10 MHz Frequency Reference from PSG to M8190A, MXG1, Scope Connect LAN to PC, M8190A, Scope Controlling PC (Could be Desktop, Laptop or Embedded) 81199A Wideband Waveform Center (WWC) Waveform M8190A Wideband AWG (I/Q Generation) Differential IQ AWG to PSG PSG: E8267D (I/Q Modulation) VDI Up-converter Differential IQ AWG to Scope MXG1: N5183A-520 MXG (Tx LO) MXG2: N5183A-520 MXG (Rx LO) DUT 89601B VSA SW Demod LO/IF Aux LO/IF 10 MHz RF In Acq'd Signal 5 GHz M1971E WB Smart Mixer DSA91304A Infiniium Digital Speed Analyzer 60 GHz Solutions Page 32

32 IEEE802.11ad Test items Transmitter test Transmit mask Center frequency tolerance Symbol clock tolerance Transmit center frequency leakage Transmit ramp-up and rampdown Transmit EVM (Control PHY) Transmit EVM (OFDM) Tx flatness Transmit EVM (SC PHY) Receiver test SEM EVM Maximum input requirement Receive sensitivity Page 33

33 802.11ay/NG60 status Expect schedule: 2017 Target Max Data Rate: 20GHz (4,32GHz), 100GHz(8.64GHz) Modulation: up to 64APSK (NUC) Range: 10m -> 300 ~ 500m (LOS and NLOS) MIMO and MU-MIMO up to 4x4 Channel Bonding NUC 64APSK 4x4 MIMO Phase shifter V pol Signal 3 rd stream PAA element Distance between array centers - d Signal 4 th stream Phase shifter V pol Signal 1 st stream H pol PAA element Signal 2 nd stream PAA #2 H pol PAA #1 H and V pol Source: IEEE, ay-su-mimo-configurations-for-ieee ay H and V pol Customizable in Footer Page

34 802.11ay/NG60 use cases Wireless Video Data Center backup connection 8K UHD Service Replacement of wired interface Set-top box (TV controller) Wireless Transfer from fixed device Blu-ray player TV or Display VR/AR Wireless Transfer from mobile device Smart phone/tablet Backhaul NG60 AP N-LOS Access NG60 AP LOS Access BUS STOP Page 35

35 802.11ay (NG60, Next Generation 60GHz WLAN) Next Generation of 11ad, Spec ready by 2017 Source: IEEE, ay-a-view-on-ieee ay Keysight Restricted Page

36 Wi-Fi Evolution Path and beyond 2.4 GHz a/b/g/j/p n 5 GHz a n ac 60 GHz ax ax p aj ad ay n Widely adopted and large installed base ac/ax Higher capacity, higher data rate for mobile, computing and CE devices p Wireless access in vehicular environment at 5.8/5.9 GHz aj China (59-64 & 45 GHz) ad/WiGig/ay Wireless docking, in-room wireless display, audio and more <1 GHz af ah ah Home/building automation, sensors and more af TV white space 37 Page

37 IoT Key Enabling Technologies IEEE ah IoT applications IEEE ah PHY and MAC are specified for IoT type of applications Envisioned to provide IP connectivity to all types of devices that are currently not connected to the internet and yet-to-be-invented devices Operation Feature Transmission range up to 1 km Data rates > 100 kbit/s Optimizations for highly robust links and low power consumption required for battery operated devices Target use cases Large scale sensor networks and meters Extended range hotspot Outdoor Wi-Fi for cellular traffic offloading Standards status: The IEEE WG is currently developing draft 4.0 of the spec, which typically means it is stable enough to commence WFA MRD activities Targeted IEEE specification will be finalized in mid-2016 WFA has decided to create a Marketing Task Group to start the development of an interoperability program. Potential WFA program launch: H ah AP Indoor 11a/g/n/ac AP IoT/M2M Page 38

38 802.11ah Bandwidth and Data Rates Mandatory & Globally Interoperable modes optimized for sensor networking 11ah Bandwidth Modes 1 MHz 2 MHz Extended range 150Kbps* 4Mbps 650Kbps 7.8Mbps 4 MHz 1.35Mbps 18Mbps Optional higher data rate modes for extended range WLAN 8 MHz 16 MHz Minimum 11n/ac bandwidth 20 MHz 2.9Mbps 39Mbps 5.8Mbps 78Mbps High data rates 6.5Mbps 78Mbps Page 39

39 The PHY difference between ac and ah Source: Draft Amendment Proposed by TGah Working Group Feature ac ah Channel bandwidth 20/40/80/160MHz 1/2/4/8/16MHz FFT size 64/128/256/512 32/64/128/256/512 Data subcarriers / 52/108/234/468 24/52/108/234/468 Pilot Sub-carriers 4/6/8/16 2/4/6/8/16 Pilot Type Fixed pilot Fixed pilot or Traveling pilot* Subcarrier spacing 312.5KHz 31.25KHz OFDM symbol duration 4.0/3.6us 40/36us Guard interval 0.4/0.8/1.6us 4/8/16us Preamble duration 16us 320us(1M BW)/160us Modulation types BPSK/QPSK/16QAM/64QAM/256QAM BPSK/QPSK/16QAM/64QAM/256QAM Coding rates 1/2, 2/3, 3/4, 5/6 1/2 rep2, 1/2, 2/3, 3/4, 5/6 MCS 0-9 MCS0-9, 10 Transmission Mode VHT mode, non-ht duplicate Mode Normal Mode S1G, 1 MHz Duplicate Mode, 2 MHz Duplicate Mode Duplicated PPDU Non-HT PPDU S1G_DUP_1M, S1G_DUP_2M MIMO Up to 8 Up to 4 Multi-user Up to 4 Up to 4, only available in S1G_LONG PPDU Beamforming Support Support Page 40

40 802.11ah Global Channelization Max. BW 16 MHz 4 MHz 2 MHz 8 MHz 1 MHz 4 MHz From IEEE ah draft standard IoT/M2M Page 41

41 802.11ah Use Case Indoor Low Power Sensors Extended range Reach garage, backyard, basement, attic 1 MHz and 2 MHz mandatory modes Battery operated sensors No power amplifiers Large numbers of devices (1000s) per AP Ultra-low power consumption Optimized for small packet size Multi-year battery life Long sleep time Burst traffic IP support IoT/M2M Page 42

42 WLAN af af WLAN in TV White Space (TVWS) There are gaps and unused channels in the broadcasting spectrum Defines enhancement to enable WLAN operation in the TV white space Cognitive radio techniques will be used to avoid interference with digital TV, these include: Beacons/Enablement and Geo-location US FCC has provided final rules for TV White Spaces Other countries are closely watching and are working on similar plans This standard has been published in 2013 What is af? Used <1 GHz spectrum ( MHz for UHF and MHz for VHF) Physical layer is based on ac 6, 7 and 8 MHz bandwidth Channel bonding up to 4 channels Spatial stream: up to four streams used for either space time block code (STBC) or multi-user (MU-MIMO) operation Page 43

43 802.11af TV White Space PHY Layer: reuse VHT 40MHz PHY to 11af af Indoor af outdoor Coverage ~100m ~5Km FFT 128 Bandwidth, MHz 6M, 7M, 8M CA (contiguous) 2 continuous: 12M, 14M, 16M 4 continuous: 24M, 28M, 32M CA (non-contiguous) 2 non-continuous: 6+6, 7+7, non-continuous: 12+12, 14+14, Modulation BPSK, QPSK, 16QAM, 64QAM FEC Symbol time, us Convolutional code 30(6M), 30(7M), 22.5(8M) Page

44 WLAN Design Challenges Bandwidth: increase to 80/160 MHz a/b/g/n only required 40 MHz PA digital pre-distortion requires 3-5x system BW DPD BW 160 Better modulation quality and debug tool 256QAM modulation requires higher SNR, better phase noise Analyze I/Q impairments MIMO and Beamforming (up to 8 spatial streams) More antennas, more processing, more space required Prototyping a multi-antenna radio requires the use of multichannel test systems Improve PA efficiency and linearity Digital Pre-Distortion for linearity Envelope Tracking for power saving Page 45

45 Test Challenge: Generating Wider Bandwidth Signals Vector signal generator hardware needs to support 40, 80, and 160 MHz BW signals Digital Pre-Distortion may require measuring 3 to 5 times the BW of desired signal: up to 800 MHz for 160 MHz signal Software: N7617B Signal Studio and SystemVue Hardware for single-channel measurements: N5182B: up to 160 MHz modulation BW N5172B: up to 120 MHz modulation BW E4438C, N5182A and up to 80 MHz BW N5106A: up to 160 MHz M9381A PXI VSG: up to 160 MHz BW E6640A: up to 160MHz modulation BW M8190A 12 GSa/s Arbitrary Waveform Generator Page 46

46 Test Challenge: Analyzing Wider Bandwidth Signals Analyzer hardware needs to support 40, 80, and 160 MHz BW signals Digital Pre-Distortion may require measuring 3 to 5 times the BW of desired signal: up to 800 MHz for 160 MHz signal Software: all channel BWs supported by VSA and N9077A Hardware for single-channel measurements: N9040A UXA signal analyzer: up to 510 MHz demod BW N9030A PXA signal analyzer: up to 160 MHz demod BW N9020A MXA signal analyzer: up to 160 MHz demod BW M9391A PXI VSA: up to 160 MHz BW E6640A EXM Wireless Test Set: up to 160 MHz BW Infiniium or Infiniivision oscilloscopes: 1 GHz or wider BW Page 47

47 E6640A EXM Wireless Test Set for DVT and Mfg Broadest Multi-Format Coverage Cellular LTE/LTE-A FDD/TDD HSPA+, W-CDMA 1xEV-DO, cdma2000 GSM/EDGE/EDGE Evo TD-SCDMA/TD-HSPA DECT PHS Controller Frequency: up to 6GHz BW: up to 160MHz TRX 1 TRX 2 Reference TRX 3 TRX 4 Wireless Connectivity WLAN a/b/g/n/j/p/ac/ah/af/ax Bluetooth 1.0 to 4.2 ZigBee Z-Wave Multi-Satellite GNSS Plus more MIMO (2x2, 3x3, 4x4) IoT/M2M Page 48

48 EXM MIMO Test Solutions Comprehensive MIMO Test Solutions and Benefits Small form factor Up to 4 TRXs to support 4X4 True MIMO in one box Easy set up Easy to set up, no need complex connection for synchronization High performance Fast, accurate and reliable MIMO measurement and detailed measurement results Comprehensive MIMO Test Solutions True MIMO Multi-channel parallel test with Multi TRX Switched MIMO Multi-channel sequential test with 1 TRX Tx Beam forming Implicit Tx Beamforming calibration with 1 TRX For design and validation For Costeffective manufacturing testing Calibration test for Broadcom device Page 49

49 Thank You!!! Questions and Answers IoT/M2M Page 50 Copyright 2014 Agilent. All rights reserved

50 Back-up Slides Page 51