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MIMO Accelerator: A Programmable MIMO Decoder Chip and Design Environment

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What
  • PhD Defenses
When Aug 23, 2012
from 10:00 AM to 11:30 AM
Where Engr. IV Bldg., Tesla Room 53-125
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Mohamed Mohamed

Advisor: Babak Daneshrad

 

Abstract

With wireless communications becoming an essential part of human life, wireless technology advances to meet the increasing demands. New standards are introduced every couple of years to regulate the implementation of wireless systems. Most of modern standards are based on MIMO and OFDM signaling, which makes any time saving in a MIMO-OFDM receiver design cycle essential.

This work introduces a hardware implementation for a MIMO decoder accelerator, which is a software-programmable device that specializes in MIMO decoding, and MIMO signal processing in general, for OFDM systems. A VLSI implementation of the accelerator is introduced highlighting some of the implementation decisions and techniques to minimize the overall energy consumption of the accelerator hardware. The accelerator chip core area is 2.48mm2 in 65nm CMOS technology. Its average power consumption is 224.3 at 166MHz clock frequency. A deeply pipelined design for a powerful processing core allows the accelerator to achieve energy consumption figures competing with specialized designs. A single accelerator chip can be programmed to complete 4x4 QR decomposition, 4x4 Singular-Value Decomposition (SVD), 2x2 MMSE MIMO decoding, 4x4 MMSE MIMO decoding, or many other possible applications. A simple design flow is presented to assist a MIMO-accelerator user in mapping a MIMO-related algorithm to a successful accelerator-based hardware implementation in no time. The accelerator, with its diversity and energy efficiency, can empower a wireless MIMO-OFDM receiver giving it an unparalleled advantage over regular fixed-data-path systems.

 

Biography

Mohamed received the B.Sc. and M.Sc. degrees in Electronics and Communications Engineering from Cairo University, Egypt, in 2004 and 2007, respectively. He is currently a Ph.D. candidate in Electrical Engineering Department at UCLA after joining the Wireless Integrated Systems Research group (WISR) in 2007. His research interests include digital circuit design and hardware implementation for wireless communication systems.

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