CANCELLATION OF CO-CHANNEL INTERFERENCE AND INTER-SYMBOL INTERFERENCE IN A MIMO COMMUNICATION SYSTEM

摘要

Recently the multiple-input multiple output systems has been investigated. This provides a considerable increase in throughput at relatively small cost in terms of bandwidth. However, the processing overhead for this type of communication technique is signifiant. In addition, this type of system involves considerable processing overhead in trying to remove interference both from unknow co-channel interference (CCI) from external interferers as well as inter symbol interference (ISI). The scheme of the invention contains two space-time filters, which can be operated sequentially. The primary purpose of the first filter is CCI cancellation whereas the primary purpose of the other filter is ISI cancellation. This separation of processing the ISI and CCI whilst operating an integrated channel estimation scheme provides considerable improvements over the prior art systems. Each filter can be optimised to the removal of the specific type of interference.