Title :
An improved turbo-BLAST system for quasistatic channel
Author :
Qifan Chen ; Wang, Haifeng ; Ming Chen ; Cheng, Shixin
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China
Abstract :
We investigate the difference between extrinsic and posteriori information fed back from outer decoder to inner detector in a turbo-BLAST system for a quasistatic channel. With the help of extrinsic information transfer (EXIT) chart and simulation, it is observed that a faster convergence rate is obtained to feed back posteriori information, and especially, a better steady state performance is attained when antenna number is small.
Keywords :
antenna arrays; convergence; error statistics; signal detection; telecommunication channels; turbo codes; EXIT; convergence rate; extrinsic and posteriori information; extrinsic information transfer chart; outer-inner detector; quasistatic channel; steady state BER performance; transmit-receive antenna; turbo-BLAST system; Bit error rate; Convergence; Detectors; Feeds; Interference cancellation; Iterative decoding; Multiaccess communication; Multiple access interference; Receiving antennas; Transmitters;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on
Print_ISBN :
0-7803-8523-3
DOI :
10.1109/PIMRC.2004.1368267
