DocumentCode :
2124089
Title :
Chip space-time block coding using iterative channel estimation with inter-antenna interference cancellation for W-CDMA systems using long scrambling codes
Author :
Casella, I.R.S. ; Sousa, E.S. ; Jeszensky, P.J.E.
Author_Institution :
Laboratorio de Comunicacoes e Sinais, Univ. de Sao Paulo, Brazil
Volume :
4
fYear :
2004
fDate :
5-8 Sept. 2004
Firstpage :
2313
Abstract :
Space-time block coding (STBC) is a promising spatial diversity technique for future wireless communications systems. The combination of STBC and wideband code division multiple access (WCDMA) technology has the potential to increase users performance in wireless communication networks. In the downlink of WCDMA systems, multiple access interference (MAI), which impairs system performance, can be mitigated by chip level channel equalization. In this paper, we have proposed to combine chip level STBC (CSTBC) (I. R. S. Casella et al., 2003) and equalization pos-combining with channel estimation (EPCCE) scheme (2003) for improving diversity and system robustness to frequency selective fading channels. Additionally, we present a new iterative channel estimation (ICE) algorithm to reduce inter-antenna interference (IAI), due to multiple antennas transmissions, and improving space-time block decoding at the receiver when the number of training symbols is limited.
Keywords :
antenna arrays; block codes; broadband networks; channel estimation; code division multiple access; diversity reception; equalisers; fading channels; interference suppression; iterative decoding; radio links; radio networks; radiofrequency interference; space-time codes; stability; W-CDMA system; chip level channel equalization; chip space-time block coding; frequency selective fading channel; interantenna interference cancellation; iterative channel estimation algorithm; multiple access interference; multiple antennas transmission; scrambling code; spatial diversity technique; wideband code division multiple access technology; wireless communications system; Block codes; Channel estimation; Downlink; Interference cancellation; Multiaccess communication; Multiple access interference; Space technology; System performance; Wideband; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on
Print_ISBN :
0-7803-8523-3
Type :
conf
DOI :
10.1109/PIMRC.2004.1368732
Filename :
1368732
Link To Document :
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