Simplified Joint Iterative Detection and Decoding in BICM MIMO-OFDM Systems

摘要：

Joint iterative detection and decoding scheme is exploited for a Bit-Interleaved Coded Modulation (BICM) multiple-input multiple-output (MIMO) Orthogonal-Frequency Division Multiplexing (OFDM) system. A simplified channel estimation utilizing channel frequency-domain correlation is used to decrease FFT order and provide channel state information for the demapper. An improved list sphere-decoding (ILSD) SISO demapper without the requirement of initial radius is also adopted. The computation complexity of ILSD can be further reduced by the simplified channel estimation method. Simulations show that the BICM MIMO-OFDM scheme is robust to the timing-vary frequency selective fading channels. Performance degradation caused by simplification can be compensated by increasing the iterative number of the receiver.

关键词： Joint iterative detection and decoding BICM MIMOOFDM channel estimation ILSD

作者: Fengkui Gong Jianhua Ge

作者单位: State Key Laboratory of ISN,Xidian University,Xian 710071, Shannxi, China

会议类型: 国际会议

会议名称: 第三届IEEE无线通讯、网络技术暨移动计算国际会议

会议地点: 上海

会议语种:英文

在线出版日期: 2007-09-21（万方平台首次上网日期，不代表论文的发表时间）