Adaptive bit loading and transmit diversity for iterative OFDM receivers

作     者：Sand, Stephan Mensing, Christian Mutti, Carlo Wittneben, Armin 

作者机构：German Aerosp Ctr DLR Inst Commun & Nav D-82234 Oberpfaffenhofen Wessling Germany Swiss Fed Inst Technol Commun Technol Lab CH-8092 Zurich Switzerland 

出 版 物：《WIRELESS PERSONAL COMMUNICATIONS》 (无线个人通信)

年 卷 期：2008年第47卷第1期

页      面：51-61页

核心收录：

学科分类：0810[工学-信息与通信工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：COST289 

主　　题：OFDM bit-interleaved coded modulation adaptive bit loading cyclic delay diversity discontinuous Doppler diversity iterative receiver EXIT chart 

摘      要：In this paper, we consider a transmission system employing orthogonal frequency division multiplexing with bit-interleaved coded modulation and perfect channel state information at both transmitter and receiver. An adaptive bit loading scheme in combination with cyclic delay diversity and discontinuous Doppler diversity is proposed at the transmitter and iterative demapping and decoding at the receiver. The loading procedure minimizes the bit-error rate at the decoder output, and the transmit diversity schemes mitigate channel correlations. We analyze the iterative receiver with extrinsic information transfer charts and present the achievable gains.