Title :
Multiple-Symbol Differential Sphere Detection Aided Differential Space-Time Block Codes Using QAM Constellations
Author :
Xu, Chao ; Wang, Li ; Ng, Soon Xin ; Hanzo, Lajos
Author_Institution :
Sch. of Electron. & Comput. Sci., Univ. of Southampton, Southampton, UK
Abstract :
We propose Multiple-Symbol Differential Detection (MSDD) aided Differential Space-Time Block Codes (DSTBCs) using QAM. Our solution eliminates the requirement of high-complexity MIMO channel estimation and its pilot overhead, while mitigating the potential performance degradation of noncoherent receivers in fast fading channels. Additionally, we develop Multiple-Symbol Differential Sphere Detection (MSDSD) for the QAM aided DSTBC schemes advocated, in order to circumvent their potentially excessive complexity.
Keywords :
differential detection; fading channels; quadrature amplitude modulation; space-time block codes; DSTBC; MSDD; QAM constellation; differential space-time block code; fading channel; multiple-symbol differential sphere detection; Bit error rate; Complexity theory; Correlation; Estimation; Fading; Quadrature amplitude modulation; Receivers; Differential space-time block code; QAM; multiple-symbol differential sphere detection;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2011.2160851
