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Low power soft-output signal detector design for wireless MIMO communication systems

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2 Author(s)
Sizhong Chen ; Electr., Comput., & Syst. Eng. Dept., Rensselaer Polytech. Inst., Troy, NY, USA ; Tong Zhang

Energy-efficient realization of soft-output signal detection is of great importance in emerging high-speed multiple-input multiple-output (MIMO) wireless communication systems. This paper presents three algorithm-level complexity-reduction techniques for soft-output detector design to achieve significant energy savings. To demonstrate their effectiveness, we designed a soft-output detector for 4-4 MIMO with 64-QAM using 65nm CMOS technology. While achieving near-optimum detection performance, the detector can support over 100Mbps throughput with only 0.24mm2 silicon area and 11mw power, leading to a ×10 improvement over the state of the art.

Published in:

Low Power Electronics and Design (ISLPED), 2007 ACM/IEEE International Symposium on

Date of Conference:

27-29 Aug. 2007