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Serially Concatenated Space-Time Coded Continuous Phase Modulated Signals

Dhammika Bokolamulla (Institutionen för data- och informationsteknik, Datorteknik (Chalmers)) ; Tor Aulin (Institutionen för data- och informationsteknik, Datorteknik (Chalmers))
IEEE Transactions on Wireless Communications (1536-1276). Vol. 6 (2007), 10, p. 3487-3492.
[Artikel, refereegranskad vetenskaplig]

We investigate the detection of space time codes (STC) modulated using continuous phase modulation (CPM), in quasi-static fading channels. A symbol-by-symbol iterative detector with an optimum front-end is derived, and its reduced complexity implementation is considered. Also, we have introduced several full-rank STC-CPM systems, constructed by combining full-diversity STCs with simple, widely-used CPM schemes, and introducing a small frequency offset. According to the simulation results, the bit error rate (BER) performance of the detector for quasi-static fading is around 1 dB from the case without fading. Furthermore, a comparison of the performance of the proposed detector with results from previous work on STCCPM showed an improvement in the range of 2-3 dB. Moreover, the detector is robust to the errors in estimating the channel state information (CSI), which is a desirable feature for practical implementation.

Nyckelord: Continuuous phase modulation, space time codes, iterative detection, fading channels

Denna post skapades 2007-10-24.
CPL Pubid: 56993