Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article VLSI Implementation of a Fixed-Complexity Soft-Output MIMO Detector for High-Speed Wireless | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID 893184 13 pages doi 2010 893184 Research Article VLSI Implementation of a Fixed-Complexity Soft-Output MIMO Detector for High-Speed Wireless Di Wu EURASIP Member 1 2 Johan Eilert 1 2 Rizwan Asghar 1 and Dake Liu1 1 Department of Electrical Engineering Linkoping University 58183 Linkoping Sweden 2 ST-Ericsson AT AB Lund Sweden Correspondence should be addressed to Di Wu diwu@ Received 30 September 2009 Revised 17 May 2010 Accepted 23 June 2010 Academic Editor Taskin Kocak Copyright 2010 Di Wu et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. This paper presents a low-complexity MIMO symbol detector with close-Maximum a posteriori performance for the emerging multiantenna enhanced high-speed wireless communications. The VLSI implementation is based on a novel MIMO detection algorithm called Modified Fixed-Complexity Soft-Output MFCSO detection which achieves a good trade-off between performance and implementation cost compared to the referenced prior art. By including a microcode-controlled channel preprocessing unit and a pipelined detection unit it is flexible enough to cover several different standards and transmission schemes. The flexibility allows adaptive detection to minimize power consumption without degradation in throughput. The VLSI implementation of the detector is presented to show that real-time MIMO symbol detection of 20 MHz bandwidth 3GPP LTE and 10 MHz WiMAX downlink physical channel is achievable at reasonable silicon cost. 1. Introduction Multi-antenna or multi-in and multiout MIMO technologies have been widely adopted by the latest wireless standards such as 3GPP LTE and WiMAX to enhance the spectrum efficiency. For MIMO systems a major challenge is the
