Submission doc.: IEEE 802.11-15/ 0431 r0 March 2015 Dmitry Cherniavsky, SiBEAM, Inc.Slide 1 Shared MIMO Architecture for 802.11ay. Date: 2015-03-10 Authors:

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Submission doc.: IEEE / 0431 r0 March 2015 Dmitry Cherniavsky, SiBEAM, Inc.Slide 1 Shared MIMO Architecture for ay. Date: Authors:

Submission doc.: IEEE / 0431 r0 March 2015 Dmitry Cherniavsky, SiBEAM, Inc.Slide 2 Abstract Shared MIMO Architecture for ay. This presentation proposes an additional architecture for multi-stream operation of ay link.

Submission doc.: IEEE / 0431 r0 Dmitry Cherniavsky, SiBEAM, Inc. Spatial Multiplexing Using MIMO Architecture MIMO architecture can be used to multiplex multiple data streams over different spatial streams in the wireless channel, consequently increasing the data rate MIMO architecture requires as many TX and RX data- paths as number of transmit and receive spatial streams, hence for majority of applications number of spatial streams may be up to four. Combination of MIMO architecture and beam-forming for each spatial stream can be used to increase received SNR. 3SiBEAM Confidential March Dmitry Cherniavsky, SiBEAM, Inc.

Submission doc.: IEEE / 0431 r0 Dmitry Cherniavsky, SiBEAM, Inc. Split-Array Multi-Stream Architecture M Tx and M Rx antennas split across N(xN) spatial streams such that each antenna is associated with a single spatial stream Effective array size for each stream is M Tx /N and M Rx /N Number of data streams may be less than number of spatial streams, K ≤ N (down to K = 1) 4 DAC H: M Tx X M Rx DAC U V SiBEAM Confidential K data streams ADC N spatial streams March Dmitry Cherniavsky, SiBEAM, Inc.

Submission doc.: IEEE / 0431 r0 Dmitry Cherniavsky, SiBEAM, Inc. Shared-Array Multi-Stream Architecture M Tx and M Rx antennas shared across N(xN) spatial streams. Full array used for each beam. Fair comparison must assume constant total TX power per TX antenna. Increases number of phase shifters and associated feedback. More general architecture that split architecture can be mapped on to. More flexibility in allocating antenna groups to the streams. 5SiBEAM Confidential ADC V K data streams H: M Tx X M Rx DAC U K data streams N spatial streams March Dmitry Cherniavsky, SiBEAM, Inc.

Submission doc.: IEEE / 0431 r0 Dmitry Cherniavsky, SiBEAM, Inc. Channel measurement setup. Living-room setup with many typical reflections resulting in NLOS propagation paths  Living-room layout: letters indicate “roaming” measurement points toward “AP/PCP”. AP March Dmitry Cherniavsky, SiBEAM, Inc.

Submission doc.: IEEE / 0431 r0 Performance Using field-measured 60 GHz channel. OFDM modulation scheme, two spatial streams over 36 antenna (M Tx =M Rx =36). Shared architecture providing larger beam-forming gain per stream. Dmitry Cherniavsky, SiBEAM, Inc.  Simulations parameters  Beam-Forming phases quantized to 4 levels (0, 90, 180, and 270 degrees)  Pre-coder feedback: Unitary matrix  Ideal feedback: Pre-coder feedback per each frequency tone and with infinite resolution  8-tone 6-bit feedback: Pre-coder feedback per groups of 8 consecutive frequency tones and with 6-bit resolution March Dmitry Cherniavsky, SiBEAM, Inc.

Submission doc.: IEEE / 0431 r0 Proposal We suggest to include shared MIMO architecture for multi-stream operation into ay as more effective in utilizing the antenna array. Dmitry Cherniavsky, SiBEAM, Inc. March Dmitry Cherniavsky, SiBEAM, Inc.