Analysis of Wireless Link Performance under Quasi-Orthogonal Space-Time Block Codes
Keywords:
Orthogonal space time block code (OSTBC), wireless communication, Zero forcing decoding technique, Alamouti scheme, multiple input multiple output (MIMO) systemsAbstract
In wireless communication, the primary focus lies on the interference among symbols rather than noise. The utilization of orthogonal space-time block codes (OSTBC) has shown to be a highly effective method for implementing the notion of interference immunity. When the number of antennas exceeds two, it becomes unfeasible to provide complete transmission, as observed in the Alamouti system. In this particular scenario, quasi-orthogonal space-time block coding (STBC) presents itself as an alternative approach, albeit with the drawback of introducing some level of interference. The zero forcing (ZF) decoding approach is occasionally employed to transform quasi-orthogonal space-time block codes (STBCs) into fully orthogonal codes, but at the cost of increased noise. This study aims to analyze the influence of channel gain on the amplification of noise. Encouraging results have been obtained in this regard.
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