Title :
Space-time trellis coding with turbo equalisation for the EGPRS system
Author :
Pukkila, Markku ; Heikkilä, Markku J. ; Ranta, Pekka A.
Author_Institution :
Nokia Res. Center, Espoo, Finland
Abstract :
Transmit diversity techniques like delay diversity (DD) or space-time trellis coding (STTC) utilise several transmission antennas and thereby protect mobile radio systems against fast fading. The more complex STTC can recover bursts with a few errors, but on the other hand it increases bit errors for bad bursts. Therefore the concatenation of an outer convolutional code and STTC is not superior to the simple DD scheme. The outer coding is commonly used in mobile packet data applications to detect and correct transmission errors. We are interested in further improving STTC performance by the iterative turbo equalisation (TE) technique, which performs space-time decoding-equalisation and outer decoding in an iterative fashion. Our objective is to analyse whether TE can exploit the more complex STTC structure by comparing the iterative gains of STTC and DD. The performance evaluation is done by simulations in the Enhanced General Packet Radio System (EGPRS) platform
Keywords :
cellular radio; concatenated codes; convolutional codes; diversity reception; equalisers; fading channels; iterative decoding; packet radio networks; trellis codes; Enhanced General Packet Radio System; concatenated code; convolutional code; delay diversity; enhanced GPRS system; fast fading; iterative turbo equalisation; mobile radio systems; outer coding; outer decoding; packet data applications; space-time trellis coding; transmit diversity; Convolutional codes; Delay; Error correction; Fading; Iterative decoding; Land mobile radio; Mobile antennas; Protection; Tellurium; Transmitting antennas;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2001 12th IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7244-1
DOI :
10.1109/PIMRC.2001.965506
