JICCE (한국정보통신학회)
Current Result Document :
| 한글제목(Korean Title) |
Evaluation of an Efficient Channel Estimator for the STTD Schemes |
| 영문제목(English Title) |
Evaluation of an Efficient Channel Estimator for the STTD Schemes |
| 저자(Author) |
Seong-Hwan Kim
Cheol-Hun Na
Sang-Jin Ryoo
In-Tae Hwang
|
| 원문수록처(Citation) |
VOL 05 NO. 03 PP. 0185 ~ 0193 (2007. 09) |
한글내용
(Korean Abstract) |
|
영문내용
(English Abstract) |
This paper evaluates the performance combining space-time transmit diversity (STTD) and an efficient channel estimator (ECE) for wideband code division multiple access (WCDMA) systems in various mobile channels. Using decision variable (DV), we also derive the analytic bit error rate (BER) and mean square error (MSE) for WCDMA applying ECE for STTD schemes. The simulation results show that the ECE performance is superior to the previous works in [1] as because we use additional pilot diversity which is so called secondary common control physical channel (S-CCPCH). The performance in case of the channel estimator using only one-channel or two-channel is worse than that of an ECE as about the maximum 4 dB at BER 1.0E-3 satisfying voice service over Rician fading channel. Our results show that, even with ICE, an ECE algorithm are effective in improving the output SNR and significantly reduce the error floor. In addition, the simulation results investigated in this paper also reveal that WCDMA combining an ECE and the STTD scheme could provide appreciable performance improvements in Rayleigh fading channel. |
| 키워드(Keyword) |
STTD
channel estimation
WCDMA
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| 파일첨부 |
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