Title :
Efficient and Low-Complexity Reception Algorithm for Soft Decoded MIMO Communication System
Author :
Kravtsova, Galina ; Karpitski, Yuri ; Cleveland, Joseph
Abstract :
This paper introduces a simple but efficient reception algorithm for the MIMO systems with spatial multiplexing or Bell Laboratories Layered Space-Time (BLAST) architecture and soft decoding. We also analyze the optimal maximum likelihood algorithm as well as the minimum mean squared error (MMSE) and MMSE with ordered successive interference cancellation (MMSE-OSIC) algorithms. The performance of these algorithms at the decoder input and output when soft and hard decoding are used is studied. A novel simple MMSE with soft decisions enhancement (MMSE-SDE) algorithm is proposed with improved characteristics for soft decoding. This algorithm provides up to 3 dB gain over MMSE and MMSE-OSIC in the ill-conditioned MIMO channel.
Keywords :
MIMO communication; interference suppression; least mean squares methods; maximum likelihood decoding; multiplexing; BLAST; Bell Laboratories layered space-time architecture; MMSE; low-complexity reception algorithm; minimum mean squared error; optimal maximum likelihood algorithm; ordered successive interference cancellation; reception algorithm; soft decisions enhancement algorithm; soft decoded MIMO communication system; spatial multiplexing; Algorithm design and analysis; Bit error rate; Demodulation; Forward error correction; Interference cancellation; MIMO; Maximum likelihood decoding; Transmitters; Transmitting antennas; Wireless communication;
Conference_Titel :
Vehicular Technology Conference, 2006. VTC-2006 Fall. 2006 IEEE 64th
Conference_Location :
Montreal, Que.
Print_ISBN :
1-4244-0062-7
Electronic_ISBN :
1-4244-0063-5
DOI :
10.1109/VTCF.2006.75
