Space-Time-Frequency Spreading and Coding for Multi-User MIMO-OFDM Systems
作者单位：Department of Electrical EngineeringConcordia UniversityMontrealQuebec
会议名称：《2008 IEEE International Conference on Communications(ICC 2008)》
会议日期：2008年
学科分类：0810[工学-信息与通信工程] 08[工学] 081001[工学-通信与信息系统]
摘 要：In this paper,we propose a multiple-input-multipleoutput,orthogonal frequency division multiplexing,code-division multiple-access （MIMO OFDM-CDMA） *** main objective is to provide extra flexibility in user multiplexing,and offer better diversity/multi-user-multiplexing *** is done by spreading on all the signal domains;i.e,space-timefrequency spreading is employed to transmit users’ *** study and simulation results show that MIMO OFDM-CDMA is capable of flexible data rates and easy user multiplexing,while simultaneously suppressing the multi-user interfering *** addition,our scheme achieve a diversity gain significantly larger than that of the conventional 2-D CDMA OFDM scheme.