Pilot-Assisted Decision Feedback Channel Estimation for STTD in OFDM Mobile Radio

Koichi ISHIHARA; Kazuaki TAKEDA; Fumiyuki ADACHI

doi:10.1093/ietcom/e88-b.2.561

Pilot-Assisted Decision Feedback Channel Estimation for STTD in OFDM Mobile Radio

Koichi ISHIHARA, Kazuaki TAKEDA, Fumiyuki ADACHI

Full Text Views

0

Share
Cite this

Summary :

In this paper, we propose pilot-assisted decision feedback channel estimation (PA-DFCE) for space-time coded transmit diversity (STTD) in orthogonal frequency division multiplexing (OFDM). Two transmit channels are simultaneously estimated by transmitting the STTD encoded pilot. To improve the tracking ability of the channel estimation against fast fading, decision feedback is also used in addition to pilot. For noise reduction and preventing the error propagation, windowing of the estimated channel impulse response in the time-delay domain is applied. The average bit error rate (BER) performance of OFDM with STTD is evaluated by computer simulation. It is found that the use of PA-DFCE can achieve a degradation in the required E_b/N₀ from ideal CE of as small as 0.6 dB for an average BER = 10^-3 and requires about 2.4 dB less E_b/N₀ compared to differential STTD that requires no CE.

Publication: IEICE TRANSACTIONS on Communications Vol.E88-B No.2 pp.561-567

Publication Date: 2005/02/01

Publicized

Online ISSN

DOI: 10.1093/ietcom/e88-b.2.561

Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part2)

Category

Cite this

Copy

Koichi ISHIHARA, Kazuaki TAKEDA, Fumiyuki ADACHI, "Pilot-Assisted Decision Feedback Channel Estimation for STTD in OFDM Mobile Radio" in IEICE TRANSACTIONS on Communications, vol. E88-B, no. 2, pp. 561-567, February 2005, doi: 10.1093/ietcom/e88-b.2.561.
Abstract: In this paper, we propose pilot-assisted decision feedback channel estimation (PA-DFCE) for space-time coded transmit diversity (STTD) in orthogonal frequency division multiplexing (OFDM). Two transmit channels are simultaneously estimated by transmitting the STTD encoded pilot. To improve the tracking ability of the channel estimation against fast fading, decision feedback is also used in addition to pilot. For noise reduction and preventing the error propagation, windowing of the estimated channel impulse response in the time-delay domain is applied. The average bit error rate (BER) performance of OFDM with STTD is evaluated by computer simulation. It is found that the use of PA-DFCE can achieve a degradation in the required E_b/N₀ from ideal CE of as small as 0.6 dB for an average BER = 10^-3 and requires about 2.4 dB less E_b/N₀ compared to differential STTD that requires no CE.
URL: https://globals.ieice.org/en_transactions/communications/10.1093/ietcom/e88-b.2.561/_p

Copy

@ARTICLE{e88-b_2_561,
author={Koichi ISHIHARA, Kazuaki TAKEDA, Fumiyuki ADACHI, },
journal={IEICE TRANSACTIONS on Communications},
title={Pilot-Assisted Decision Feedback Channel Estimation for STTD in OFDM Mobile Radio},
year={2005},
volume={E88-B},
number={2},
pages={561-567},
abstract={In this paper, we propose pilot-assisted decision feedback channel estimation (PA-DFCE) for space-time coded transmit diversity (STTD) in orthogonal frequency division multiplexing (OFDM). Two transmit channels are simultaneously estimated by transmitting the STTD encoded pilot. To improve the tracking ability of the channel estimation against fast fading, decision feedback is also used in addition to pilot. For noise reduction and preventing the error propagation, windowing of the estimated channel impulse response in the time-delay domain is applied. The average bit error rate (BER) performance of OFDM with STTD is evaluated by computer simulation. It is found that the use of PA-DFCE can achieve a degradation in the required E_b/N₀ from ideal CE of as small as 0.6 dB for an average BER = 10^-3 and requires about 2.4 dB less E_b/N₀ compared to differential STTD that requires no CE.},
keywords={},
doi={10.1093/ietcom/e88-b.2.561},
ISSN={},
month={February},}

Copy

TY - JOUR
TI - Pilot-Assisted Decision Feedback Channel Estimation for STTD in OFDM Mobile Radio
T2 - IEICE TRANSACTIONS on Communications
SP - 561
EP - 567
AU - Koichi ISHIHARA
AU - Kazuaki TAKEDA
AU - Fumiyuki ADACHI
PY - 2005
DO - 10.1093/ietcom/e88-b.2.561
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E88-B
IS - 2
JA - IEICE TRANSACTIONS on Communications
Y1 - February 2005
AB - In this paper, we propose pilot-assisted decision feedback channel estimation (PA-DFCE) for space-time coded transmit diversity (STTD) in orthogonal frequency division multiplexing (OFDM). Two transmit channels are simultaneously estimated by transmitting the STTD encoded pilot. To improve the tracking ability of the channel estimation against fast fading, decision feedback is also used in addition to pilot. For noise reduction and preventing the error propagation, windowing of the estimated channel impulse response in the time-delay domain is applied. The average bit error rate (BER) performance of OFDM with STTD is evaluated by computer simulation. It is found that the use of PA-DFCE can achieve a degradation in the required E_b/N₀ from ideal CE of as small as 0.6 dB for an average BER = 10^-3 and requires about 2.4 dB less E_b/N₀ compared to differential STTD that requires no CE.
ER -