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Design and Performance of Space-Time Codes for Spatially Correlated MIMO Channels
Ist Teil von
IEEE transactions on communications, 2007-01, Vol.55 (1), p.64-68
Ort / Verlag
New York, NY: IEEE
Erscheinungsjahr
2007
Quelle
IEEE Xplore
Beschreibungen/Notizen
Space-time code (STC) designs classically rely on the assumption of independent and identically distributed (i.i.d.) Rayleigh channels. However, poor scattering conditions may have detrimental effects on the performance of STCs. In this letter, we derive code-design criteria leading to robust STCs in a large variety of slow-fading propagation conditions. No channel knowledge is assumed at the transmitter. Codes satisfying these criteria are shown to perform much better on real-world channels than codes designed only for i.i.d. channels. As examples, the robustness of various spatial multiplexing schemes, linear dispersion codes, and space-time trellis codes is discussed based on those criteria