Title :
Analysis of transmit diversity schemes: impact of fade distribution, spatial correlation and channel estimation errors
Author :
Vanganuru, Kiran ; Annamalai, A.
Author_Institution :
Bradley Dept. of Electr. & Comput. Eng., Virginia Tech, Blacksburg, VA, USA
Abstract :
In this paper, we analyze the average symbol error rate performance of arbitrary two dimensional signal constellations in conjunction with both open-loop and close-loop transmit diversity schemes in a generalized fading environment (including Rayleigh, Nakagami-m, Rician and mixed multipath fading environments). The mathematical framework can treat the case of non-identical fading parameters and dissimilar mean signal strengths across the diversity paths. We also present an analysis of the impact of spatial correlation on the performance of various transmit diversity schemes over Nakagami multipath fading channels. The impact of imperfect channel estimates (Gaussian errors) on various transmit diversity schemes in Rayleigh fading environment is also studied via analytical as well as simulation techniques.
Keywords :
Rayleigh channels; channel estimation; correlation methods; diversity reception; error statistics; multipath channels; Gaussian errors; Nakagami-m fading environments; Rayleigh fading environments; average symbol error rate performance; channel estimation errors; close-loop transmit diversity schemes; dissimilar mean signal strengths; diversity paths; fade distribution; fading environment; mathematical framework; mixed multipath fading environments; nonidentical fading parameters; open-loop transmit diversity schemes; spatial correlation; transmit diversity scheme analysis; two dimensional signal constellations; Block codes; Channel estimation; Computer errors; Constellation diagram; Error analysis; Fading; Performance analysis; Rayleigh channels; Signal analysis; Transmitting antennas;
Conference_Titel :
Wireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-7700-1
DOI :
10.1109/WCNC.2003.1200354
