Title | Multistage receiver for differential space-time block codes |
Publication Type | Conference Paper |
Year of Publication | 2003 |
Authors | Tarasak, P., H. Minn, and V. K. Bhargava |
Conference Name | Communications, 2003. ICC '03. IEEE International Conference on |
Pagination | 3155 - 3159 vol.5 |
Date Published | may. |
Keywords | approximate maximum likelihood receiver, bit error rate performance, block codes, channel estimation, differential detection, differential space-time block codes, diversity reception, error floor, error statistics, fading channels, interference suppression, intrablock-interference cancellation, multistage decision-directed estimator, multistage receiver, quasistatic fading channel, radio receivers, space-time codes, spatial diversity |
Abstract | Tarokh's differential space-time block codes (DSTBC) can provide a full spatial diversity and be decoded without channel state information. The bit error rate performance of a conventional differential detection has 3-dB degradation compared to a coherent detection in a quasi-static fading channel. Differential detection experiences more degradation in a fast fading channel and error floor appears at high SNR. In [E. Chiavaccini and G.M. Vitetta, May 2002], an approximate maximum likelihood receiver was derived and it reduced the error floor significantly. In this paper, we modify the receiver in [E. Chiavaccini and G.M. Vitetta, May 2002] and apply the concept of multistage decision-directed estimator with intrablock-interference cancellation to obtain further improvement. The proposed receiver works efficiently at moderate to high SNR and at the fading rate between fdT = 0.02 and fdT = 0.07. |
URL | http://dx.doi.org/10.1109/ICC.2003.1204007 |
DOI | 10.1109/ICC.2003.1204007 |