In this paper, we consider linear MIMO transceiver design for a cellulartwo-way amplify-and-forward relaying system consisting of a singlemulti-antenna base station, a single multi-antenna relay station, and multiplemulti-antenna mobile stations (MSs). Due to the two-way transmission, the MSscould suffer from tremendous multi-user interference. We apply an interferencemanagement model exploiting signal space alignment and propose a transceiverdesign algorithm, which allows for alleviating the loss in spectral efficiencydue to half-duplex operation and providing flexible performance optimizationaccounting for each user's quality of service priorities. Numerical comparisonsto conventional two-way relaying schemes based on bidirectional channelinversion and spatial division multiple access-only processing show that theproposed scheme achieves superior error rate and average data rate performance.
展开▼
