Gigabit Baseband Modem Technology for 5G mmwave Applications

Transcription

1 Gigabit Baseband Modem Technology for 5G mmwave Applications Interlligent Seminar, 18 th May 2017 Ray McConnell, CTO

2 Blu Wireless Technology Ltd Gigabit mmwave modem IP Consumer WiGig : IEEE ad/ay 4G backhaul and Fixed Wireless Access Pre-5G deployments 60+ wireless, silicon & software engineers Strategic partnership with ARM Ltd Deployment of ad for US customers Deep sub-micron SoC baseband design Participant in EU H2020 5G-XHaul project Members of Wi-Fi Alliance WiGig, ETSI mwt ISG groups and UK s 5G IC Page 2

3 Massive Millimetre Spectrum aj / FDD FCC Oct-15 : mmw 28, 37, 39, GHz 5G Candidate.. China aj , GHz WiGig.11ad *New* FCC E Band E Band W >40GHz of bandwidth available NOW for mmwave applications with a further >80GHz bandwidth to be allocated >100GHz TOTAL existing LTE (3/4G) Bandwidth is <2GHz. so mmwave can provide >60x this bandwidth Page 3

4 Millimetre Wave Evolution to 5G Page 4

5 mmwave Wireless Networking 60 GHz E-Band Compact electronically steered phased array antenna for ease of deployment Heterogeneous networks using both licensed and unlicensed spectrum Mesh SDN for robustness and dynamic load balancing 60GHz oxygen (V-band) attenuation helps with spectrum reuse Applications in transport sector Rail track to Train and automotive V2X Moving to Joint Back Haul/Access : 5G? Page 5

6 Licensed vs Unlicensed 5G? Licensed 28 & 39 GHz Unlicensed GHz pre-5g OFDM air interface IEEE ad/ay air interface 100 MHz channelization 1760 MHz channelization Up to 64QAM modulation BPSK to 64QAM modulation MIMO : 2x2 to 8x8 support SC with FDE Data rates: Optional MIMO (XPIC) 800 Mbps (64QAM 2x2 MIMO) 3200 Mps (64QAM 8x8 MIMO) Verizon 5G Technical Forum Data rates 2500 Mbps (QPSK no MIMO) 8000 Mbps (64QAM no MIMO) Page 6

7 60GHz Radio Technology & Market Introduction IBM : Millimetre wave RF at 60, 70/80 Bell Labs : 94 GHz RF PAA on SiGe BiCMOS IMEC: PHARA 60 GHz Phased Array RF in 28nm CMOS SiBeam: GHz Phased Array in 65nm CMOS WiGig / ad chipsets from Qualcomm, Intel WiGig Products from Lenovo, Dell, Netgear, TPLink. Page 7

8 5G Modem Complexity : ad Modem Modems Modulation FEC code rate Data rate Symbol Rate Single-carrier (MCS ) /2- BPSK /2- QPSK /2-16QAM /2-64QAM Control (MCS0) /2- DBPSK ½ (32 chip spreading) High speed IQ ADC and DAC at 7b / 3.52 GHz 2xsymbol rate Directional TDMA MAC using active beamforming LDPC error coding with common code length of 672 bits Channel equalisation based on SC CEF field suitable for delay spread ~ 30 nsec RMS Computationally intensive: 2+ Teraops for SC-FDE modem RF EIRP to +40 dbmi (FCC Part ) ½, 5/8, 3/4, 13/16 MCS1 385 Mbps MCS9 2.5 Gbps MCS Gbps MCS Gbps 1760 MHz 27.5 Mbps 1760 MHz Page 8

9 Modem Processing : Signal Flow and MOPs Rate (G/s) Real Mults (G/s) Real Add (G/s) Digital Filter & Downsampling Synchronisation 1.76 Correlation Power Calculation Maximum Detection Threshold Comparison Rough CFO Estimation Estimation Pos/Neg CFO Compensation Correlations LSE Estimator P&Q calculation Fine CFO Estimation Channel Estimation Noise Power estimation Channel DFT MMSE Equaliser Data Processing 1.76 Rx IQ Compensation CFO Compensation DFT Equalisation IDFT Tracking & TS removal Rotation calculation Rotation compensation TX IQ compensation Total (GOPs/s) * Baseband Modulation : 60 GHz Technology for Gbps WLAN/WPAN 2011 Page 9

10 HYDRA HYDRA Baseband PHY for mmw Wireless Heterogeneous Processor Equalise RF RF HYDRA Data Modulate Demodulate Parallel Processor HYDRA PHY Cyclic Prefix Synchronise Subcarrier mapping HYDRA PHY Heterogeneous RF Processor LDPC encode Cyclic Prefix TX Data HYDRA Data Modulate HYDRA Demodulate PHY Parallel Processor Heterogeneous Processor Subcarrier mapping LDPC encode TX Data Modulate Subcarrier mapping Subcarrier demapping RF HYDRA PHY LDPC decode Equalise Synchronise Subcarrier demapping RX Data Equalise LDPC decode HYDRA Data Demodulate Parallel Processor RX Data Subcarrier demapping Distributed Vector Data Channel Distributed Vector Data Channel Parallel Processor Unit (PPU) of >0.5 TeraOp/s at 500MHz LDPC encode LDPC decode PHY1 40nm prototype with 2 Terap HYDRA and integrated 2.6GHz ADC/DAC (2014) Integrated TX Data with 60 GHz RF and MAC RX Data in Lightning Platform as demonstrated at MWC 2015 Networ k I/O Network I/O Network I/O Network I/O LDPC Heterogeneous Controller Heterogeneous Controller Heterogeneous Controller Heterogeneous Controller LDPC LDPC LDPC Distributed Vector Data Channel Distributed Vector Data Channel Scalable vector parallel processor targeting ad WiGig requirements SPU Page 10

11 HYDRA Processor Block Diagram Micro Sequencer Network I/O Heterogeneous controller dispatches co-processor instructions to execution pipelines Micro Sequencer LDPC Heterogeneous Controller Vector Accelerator blocks These are application dependant Micro Sequencer PE VM PE VM SIMD Control Distribution PE VM PE VM Distributed Vector Data Channel High bandwidth data bus Non-Blocking dataflow provides concurrency Micro Sequencer PE VM PE VM Vector Data Distribution PE VM PE VM ucoded SIMD Vector Processor uses programmable pipelining, concurrency and data parallelism SPU CPU I/O RISC control processor C control program & CPU debugging tools Parallel HW and Vector Processor to support symbol rates greater than processor speed Localised Data and Dataflow Hardened Component integration :, LPDC, MIMO Scalable Components to support roadmap to HYDRA2.0, Distributed Control Development, Debugging and Performance Monitoring via standard toolchains via standard 32b RISC Page 11

12 Gain (db) Imag mmw PHY Modem Design full-band Tx Filter Cascade response, Fs=3520MHz Frequency (GHz) RRC RRC+ZOH ABB RRC+ZOH+ABB PER chtype=awgn, PSDU=8192 octets, 1000 packets/snr, 431r3 RF impairments 10 0 MCS-2, Hg Rev: 1043, Matlab MCS-2, Hg Rev: 1043, stest (fixpoint) MCS-3, Hg Rev: 1043, Matlab MCS-3, Hg Rev: 1042, stest (fixpoint) MCS-4, Hg Rev: 1043, Matlab MCS-4, Hg Rev: 1042, stest (fixpoint) MCS-5, Hg Rev: 1043, Matlab MCS-5, Hg Rev: 1042, stest (fixpoint) MCS-6, Hg Rev: 1043, Matlab MCS-6, Hg Rev: 1042, stest (fixpoint) MCS-7, Hg Rev: 1043, Matlab MCS-7, Hg Rev: 1042, stest (fixpoint) MCS-8, Hg Rev: 1043, Matlab MCS-8, Hg Rev: 1042, stest (fixpoint) 10-1 MCS-9, Hg Rev: 1043, Matlab MCS-9, Hg Rev: 1042, stest (fixpoint) MCS-10, Hg Rev:103, Matlab MCS-10, Hg Rev: 1042, stest (fixpoint) MCS11, Hg Rev: 1043, Matlab MCS-11, Hg Rev: 1042, stest (fixpoint) MCS-12, Hg Rev: 1043, Matlab MCS-12, Hg Rev: 1042, stest (fixpoint) % PER Es/N0 (db) IEEE PHN mask, 1MHz, evmdb: snr (db): PSDU error: Matlab > C model for implementation PHY Link performance BER/PER including Non-ideal RF artefacts such as phase noise, IQ, CFO, SFO Channel modelling inc multipath, LOS/NLOS Beamforming with Phased Array Antenna model and Beamsteering Control Tx and Rx digital filtering for Improved ACI MAC system model : p2p, p2mp, CBAP, TDMA and dynamic TDMA Explore system requirements for.11ay, 5G OFDM,MIMO, FEC, MAC etc Real Page 12

13 Range (m) RMS delay spread (ns) 60GHz : Estimated Range & Delay Spread mm rain/hr O2+Rain atten: 15 db/km London : Region E 22mm rain/hr O2+Rain atten: 25 db/km NYC: Region K 42mm rain/hr O2+Rain atten: 30 db/km Max EIRP = 40 dbmi (from FCC ). Link availability 99.99% Scaled 1:1 2:1 and 4: ad QPSK 2.5 Gbps SC modem 10% overhead and 1:1 full duplex datastream 250 Mbps 500 Mbps 1000 Mbps deg 10 deg 15 deg mean distance (m) Delay spread as function of antenna beamwidth RMS delay spread of <7 nsec SC FDE in.11ad can equalise for >20 nsec Page 13

14 BH2 Baseband Modem Integrated mmwave modem Dual HYDRA1.0_BH Modem Extended IEEE ad PHY/MAC TDD and FDD duplex support Support for multiple mmwave RF PCIe2.0 dual channel (8 Gbps) Flexible wireless MAC layer ad compliant LINUX SW support Development platforms Q3 17 Page 14

15 Summary Flexible millimetre wireless platform Phased array RF using mainstream semiconductors Flexible baseband able to scale up/down from WiGig Roadmap to 5G millimetre wave at 28/39 GHz Roadmap to >10 Gbps with ay UK Impact? Harmonise US and UK regulations in GHz? Millimetre Wave test beds for transport and smart city applications to support UK 5G initiative for 2018? Page 15

16 Thank you For further info please visit or contact Page 16