Unified Multi-Mode Signal Detector for LTE-A Downlink MIMO System
This paper presents a low power and small area multi-mode MIMO detector targeting the LTE-A downlink. The detector supports the detection of spatial-multiplexing, spatialdiversity, and space-division-multiple-access MIMO signals of different antenna configurations and modulation schemes. Costefficiency is achieved by algorithm and architecture co-design where low-complexity, near-maximum-likelihood (ML) detection algorithms are proposed for these three MIMO technologies respectively with most of the mathematical operations being reused. A unified parallel VLSI architecture is accordingly developed that achieves high detection throughput and runtime reconfigurability to support different MIMO modes. The proposed detector has been designed using a 65-nm CMOS technology with 88.2K equivalent gate-count, representing a 22％ less hardware-resource use than the state of art in the open literature. Operating at 1.2-V supply with 165-MHz clock, the detector achieves a 1.98Gb/s peak throughput with a energy consumption of 51.8 pJ/b, which is shown to be the most energyefficient design compared with other 64-QAM detectors.
Liang Liu Johan L(o)fgren Peter Nilsson
Department of Electrical and Information Technology, Lund University, Sweden
国际会议
2011亚太信号与信息处理协会年度峰会(APSIPAASC 2011)
西安
英文
1-6
2011-10-18（万方平台首次上网日期，不代表论文的发表时间）