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Wireless architectures combining the use of spatial division multiplexing (SDM) and space-time block coding (STBC) have begun to appear in the latest communications standards. In recent years, different detection strategies for these schemes have been proposed which can be broadly categorised as group-based or direct-detection techniques. While the former class aims at separating the different STBC...
The combination of spatial division multiplexing (SDM) and space-time block coding (STBC) is able to yield high-throughput and robust wireless communications (e.g. IEEE 802.11n). In the most common configuration, known as double space time transmit diversity (DSTTD), two Alamouti encoded streams are transmitted in parallel. In this paper we introduce an improved multicarrier hybrid STBC/SDM scheme...
This paper proposes the use of group-orthogonal frequency diversity combined with space-time block coding (STBC) to improve the performance of IEEE 802.11n wireless networks (WLANs). The extra diversity is achieved by using code-division multiplexing whereby each symbol is transmitted on more than one subcarrier. At reception, following the STBC decoding, a maximum likelihood-based turbo receiver...
This paper presents novel detection strategies for hybrid systems combining spatial division multiplexing (SDM) and space- time block coding (STBC). Group-based approaches in which STBC streams are individually targeted as well as direct approaches where the STBC structure is not taken into account in the detection process are considered. We introduce two types of group-based detectors and compare...
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