Title :
A Bidirectional Adaptive Detection for BLAST Systems Based on Deterministic Sampling
Author :
Wang, Fan ; Xiong, Yong
Author_Institution :
Electromagn. Acad., Zhejiang Univ., Hangzhou
Abstract :
We consider a novel detection algorithm based on particle filtering algorithm for Bell Laboratory layered space time (BLAST) systems. Applying QR-decomposition of the channel matrix, a tree search method based on deterministic sampling can achieve the performance near optimal decoding when the number of searching paths is very large, which is computationally complex. In this paper, we provide a bidirectional adaptive algorithm (BIDAA), which can quickly approach the best path at low cost. Simulation results show that the new algorithm can greatly outperform MMSE-SIC detection
Keywords :
adaptive decoding; adaptive signal detection; deterministic algorithms; interference suppression; least mean squares methods; matrix decomposition; particle filtering (numerical methods); signal sampling; space-time adaptive processing; tree searching; BIDAA; BLAST system; Bell Laboratory layered space time; MMSE-SIC detection; QR-decomposition; bidirectional adaptive detection algorithm; channel matrix; deterministic sampling; minimum mean square error method; optimal decoding; particle filtering algorithm; successive interference cancellation; tree search method; Constellation diagram; Detectors; Filtering algorithms; MIMO; Maximum likelihood detection; Maximum likelihood estimation; Receiving antennas; Sampling methods; Search methods; Transmitting antennas;
Conference_Titel :
Communications, Circuits and Systems Proceedings, 2006 International Conference on
Conference_Location :
Guilin
Print_ISBN :
0-7803-9584-0
Electronic_ISBN :
0-7803-9585-9
DOI :
10.1109/ICCCAS.2006.284801
