P. Bhagawat, R. Dash, and G. Choi,
"Systolic Like Soft-Detection Architecture for 4x4 64-QAM MIMO System,"
IEEE Design Automation and Test in Europe (DATE), Nice, France, April 20-24, 2009.
systems (with multiple transmit and receive antennas) are becoming
increasingly popular, and many next-generation systems such as
WiMAX, 3-GPP LTE and IEEE802.11n wireless LANs rely on the
increased throughput of MIMO systems with up to four antennas at
receiver and transmitter. High throughput implementation of the
detection unit for MIMO systems is a significant challenge
especially for higher order modulation schemes. To achieve superior
Bit Error Rate(BER) or Frame Error Rate (FER) performance, the
detector has to provide soft values to advanced Forward Error
Correction (FEC) schemes like Turbo Codes. This paper presents a
systolic soft detector architecture for high dimensional( eg. 4x4,
64-QAM) MIMO systems. A Single detector core achieves, throughput
of 215Mbps and power consumption of 23.6mW, whiles using only 33.1K
gate equivalent(for l2norm). Impressive SNR gains of
almost 2dB are observed with respect to the hard detection
counterpart over a block fading channel(at an FER of 1%).
Additionally, the architecture can be stacked to give linear
increase in throughput with linear increase in hardware resources.
© 2009 EDAA.
Associated Project(s):SHIELD (Smuggled HEU Interdiction through Enhanced anaLysis and Detection): A Framework for Developing Novel Detection Systems Focused on Interdicting Shielded HEU