Title :
Turbo differential space-time block codes with iterative demodulation and decoding
Author :
Nallanathan, A. ; Yan, Leung Pui
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
The advantage of differential space-time block codes (DSTBC) over conventional space-time block codes (STBC) is that the former does not require perfect channel state information (CSI). The trade-off is a penalty of approximately 3 dB in performance. Due to the recursive structure of DSTBC, iterative demodulation and decoding can be performed on a system of concatenated component DSTBC encoders. This paper proposes the parallel concatenation of two DSTBC blocks separated by an interleaver. It is shown that the 3 dB penalty can be sufficiently recovered within a few iterations.
Keywords :
approximation theory; block codes; channel coding; channel estimation; concatenated codes; demodulation; interleaved codes; iterative decoding; modulation coding; parallel processing; space-time codes; turbo codes; CSI; approximation; channel state information; concatenated component DSTBC encoder; differential space-time block code; interleaver; iterative decoding; iterative demodulation; parallel concatenation; recursive structure; turbo code; Block codes; Channel state information; Concatenated codes; Demodulation; Fading; Iterative decoding; Pulse modulation; Receiving antennas; Transmitters; Transmitting antennas;
Conference_Titel :
Communications, 2005. ICC 2005. 2005 IEEE International Conference on
Print_ISBN :
0-7803-8938-7
DOI :
10.1109/ICC.2005.1494668