Performance Analysis of Channel Estimators for Forward Link W-CDMA under Multipath Rayleigh Fading Channels

Seok-Jun KO; Hyung-Jin CHOI

Performance Analysis of Channel Estimators for Forward Link W-CDMA under Multipath Rayleigh Fading Channels

Seok-Jun KO, Hyung-Jin CHOI

Full Text Views

0

Share
Cite this

Summary :

This paper presents a BER performance derivation considering imperfect channel estimation for a pilot-aided coherent forward link of W-CDMA system under multipath Rayleigh fading channels. In the forward link of the W-CDMA system, pilot signal is usually used for coherent demodulation. In this paper, the maximum likelihood estimator, Wiener filter, and moving average filter are applied to estimate the channel effect due to mobile speed and frequency offset. Then, we concentrate on determining optimal parameter values of the estimators such as the observation length, delay parameters for causal/non-causal filter, and filter resolution. Also it is verified that these parameters are closely associated with the performance, hardware complexity, and characteristics of OVSF code. In particular, effect of data rate and filter resolution on the BER performance is analyzed in more detail. In addition, we show the performance comparison between the estimators considering various imperfections. Finally, we verify the derived BER by using an extensive Monte-Carlo computer simulation.

Publication: IEICE TRANSACTIONS on Communications Vol.E86-B No.4 pp.1212-1223

Publication Date: 2003/04/01

Publicized

Online ISSN

DOI

Type of Manuscript: PAPER

Category: Wireless Communication Technology

Cite this

Copy

Seok-Jun KO, Hyung-Jin CHOI, "Performance Analysis of Channel Estimators for Forward Link W-CDMA under Multipath Rayleigh Fading Channels" in IEICE TRANSACTIONS on Communications, vol. E86-B, no. 4, pp. 1212-1223, April 2003, doi: .
Abstract: This paper presents a BER performance derivation considering imperfect channel estimation for a pilot-aided coherent forward link of W-CDMA system under multipath Rayleigh fading channels. In the forward link of the W-CDMA system, pilot signal is usually used for coherent demodulation. In this paper, the maximum likelihood estimator, Wiener filter, and moving average filter are applied to estimate the channel effect due to mobile speed and frequency offset. Then, we concentrate on determining optimal parameter values of the estimators such as the observation length, delay parameters for causal/non-causal filter, and filter resolution. Also it is verified that these parameters are closely associated with the performance, hardware complexity, and characteristics of OVSF code. In particular, effect of data rate and filter resolution on the BER performance is analyzed in more detail. In addition, we show the performance comparison between the estimators considering various imperfections. Finally, we verify the derived BER by using an extensive Monte-Carlo computer simulation.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/e86-b_4_1212/_p

Copy

@ARTICLE{e86-b_4_1212,
author={Seok-Jun KO, Hyung-Jin CHOI, },
journal={IEICE TRANSACTIONS on Communications},
title={Performance Analysis of Channel Estimators for Forward Link W-CDMA under Multipath Rayleigh Fading Channels},
year={2003},
volume={E86-B},
number={4},
pages={1212-1223},
abstract={This paper presents a BER performance derivation considering imperfect channel estimation for a pilot-aided coherent forward link of W-CDMA system under multipath Rayleigh fading channels. In the forward link of the W-CDMA system, pilot signal is usually used for coherent demodulation. In this paper, the maximum likelihood estimator, Wiener filter, and moving average filter are applied to estimate the channel effect due to mobile speed and frequency offset. Then, we concentrate on determining optimal parameter values of the estimators such as the observation length, delay parameters for causal/non-causal filter, and filter resolution. Also it is verified that these parameters are closely associated with the performance, hardware complexity, and characteristics of OVSF code. In particular, effect of data rate and filter resolution on the BER performance is analyzed in more detail. In addition, we show the performance comparison between the estimators considering various imperfections. Finally, we verify the derived BER by using an extensive Monte-Carlo computer simulation.},
keywords={},
doi={},
ISSN={},
month={April},}

Copy

TY - JOUR
TI - Performance Analysis of Channel Estimators for Forward Link W-CDMA under Multipath Rayleigh Fading Channels
T2 - IEICE TRANSACTIONS on Communications
SP - 1212
EP - 1223
AU - Seok-Jun KO
AU - Hyung-Jin CHOI
PY - 2003
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E86-B
IS - 4
JA - IEICE TRANSACTIONS on Communications
Y1 - April 2003
AB - This paper presents a BER performance derivation considering imperfect channel estimation for a pilot-aided coherent forward link of W-CDMA system under multipath Rayleigh fading channels. In the forward link of the W-CDMA system, pilot signal is usually used for coherent demodulation. In this paper, the maximum likelihood estimator, Wiener filter, and moving average filter are applied to estimate the channel effect due to mobile speed and frequency offset. Then, we concentrate on determining optimal parameter values of the estimators such as the observation length, delay parameters for causal/non-causal filter, and filter resolution. Also it is verified that these parameters are closely associated with the performance, hardware complexity, and characteristics of OVSF code. In particular, effect of data rate and filter resolution on the BER performance is analyzed in more detail. In addition, we show the performance comparison between the estimators considering various imperfections. Finally, we verify the derived BER by using an extensive Monte-Carlo computer simulation.
ER -