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학술대회 A New MIMO System for Gbps Transmission
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이유로, 정민호, 윤석현, 이석규
Vehicular Technology Conference (VTC) 2007 (Fall), pp.442-446
07MM1500, 3Gbps급 4G 무선 LAN 시스템 개발, 방승찬
In this paper, a receiver algorithm for an 8×8 MIMO system is considered for Giga-bps data transmission, in which the decoding complexity and latency are crucial factors for implementation of MIMO system with large number of transmit and receive antennae. To reduce computational complexity and the decoding latency, a 3-stage receiver algorithm is proposed. The MIMO receiver consists of multi-dimensional detection, partial interference cancellation and the weighted zero-forcing equalization, where the transmit antennae are divided into two group. The first group is encoded by a lower rate code and multi-dimensional search algorithm is used for demodulation and decoding, while the second group is encoded by higher rate code and weighted zero-forcing equalization is used. Once the first group is decoded successfully, they are cancelled out from the received vector for the decoding of the second group. The complexity and the error rate performance are investigated and compared with a well-known sphere decoding algorithm. © 2007 IEEE.
KSP 제안 키워드
Computational complexity, Data transmission, Dimensional search, Error rate performance, MIMO receiver, MIMO system, Search Algorithm(GSA), Sphere decoding algorithm, Zero forcing(ZF), decoding complexity, multi-dimensional