The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Este artigo propõe um esquema de detecção coerente que pode reduzir os erros de estimativa da fase portadora devido ao ruído gaussiano em sistemas de comunicação onde a modulação assistida por símbolo piloto é empregada para compensar a distorção de desvanecimento Rician. Este artigo apresenta duas funções além dos métodos convencionais de estimativa de desvanecimento usando interpolação de Wiener, etc. A primeira é a função de média ponderada para reduzir os erros de estimativa da distorção de desvanecimento detectada pelos símbolos piloto. A segunda é a função de média móvel para estimar os erros de fase que são residuais após serem compensados pela distorção de desvanecimento estimada. Este artigo avalia o desempenho da taxa de erro de bit (BER) para o método proposto tanto no canal de desvanecimento Riciano quanto no canal de ruído gaussiano branco aditivo (AWGN) por simulação computacional. Os resultados da simulação verificam que o desempenho do BER do método proposto é superior ao de um método convencional tanto no canal de desvanecimento Riciano quanto no canal AWGN. Os resultados da simulação também confirmam que a degradação do desempenho do BER do método proposto é de apenas 0.1 dB no canal AWGN e apenas 0.3 dB no canal de desvanecimento Rician em comparação com as curvas teóricas, mesmo se reduzirmos o número de cálculos simplificando o cálculo dos coeficientes de interpolação otimizado para interpolação de Wiener.
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
Copiar
Takashi ASAHARA, Toshiharu KOJIMA, Makoto MIYAKE, "An Improved Pilot Symbol Assisted Coherent Detection Scheme for Rician Fading Channels" in IEICE TRANSACTIONS on Communications,
vol. E82-B, no. 12, pp. 2041-2048, December 1999, doi: .
Abstract: This paper proposes a coherent detection scheme that can reduce the estimation errors of the carrier phase due to Gaussian noise in communication systems where pilot symbol assisted modulation is employed to compensate for Rician fading distortion. This paper introduces two functions in addition to conventional fading estimation methods using Wiener interpolation, etc. The first is the weighted average function for reducing the estimation errors of the fading distortion detected by pilot symbols. The second is the moving average function for estimating the phase errors that are residual after being compensated for by the estimated fading distortion. This paper evaluates the bit error rate (BER) performance for the proposed method in both Rician fading channel and additive white Gaussian noise (AWGN) channel by computer simulation. Simulation results verify that the BER performance of the proposed method is superior to that of a conventional method in both Rician fading channel and AWGN channel. Simulation results also confirm that the degradation of the BER performance of the proposed method is only 0.1 dB in AWGN channel and only 0.3 dB in Rician fading channel compared with the theoretical curves even if we reduce the number of computations by simplifying the calculation of interpolation coefficients optimized for Wiener interpolation.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e82-b_12_2041/_p
Copiar
@ARTICLE{e82-b_12_2041,
author={Takashi ASAHARA, Toshiharu KOJIMA, Makoto MIYAKE, },
journal={IEICE TRANSACTIONS on Communications},
title={An Improved Pilot Symbol Assisted Coherent Detection Scheme for Rician Fading Channels},
year={1999},
volume={E82-B},
number={12},
pages={2041-2048},
abstract={This paper proposes a coherent detection scheme that can reduce the estimation errors of the carrier phase due to Gaussian noise in communication systems where pilot symbol assisted modulation is employed to compensate for Rician fading distortion. This paper introduces two functions in addition to conventional fading estimation methods using Wiener interpolation, etc. The first is the weighted average function for reducing the estimation errors of the fading distortion detected by pilot symbols. The second is the moving average function for estimating the phase errors that are residual after being compensated for by the estimated fading distortion. This paper evaluates the bit error rate (BER) performance for the proposed method in both Rician fading channel and additive white Gaussian noise (AWGN) channel by computer simulation. Simulation results verify that the BER performance of the proposed method is superior to that of a conventional method in both Rician fading channel and AWGN channel. Simulation results also confirm that the degradation of the BER performance of the proposed method is only 0.1 dB in AWGN channel and only 0.3 dB in Rician fading channel compared with the theoretical curves even if we reduce the number of computations by simplifying the calculation of interpolation coefficients optimized for Wiener interpolation.},
keywords={},
doi={},
ISSN={},
month={December},}
Copiar
TY - JOUR
TI - An Improved Pilot Symbol Assisted Coherent Detection Scheme for Rician Fading Channels
T2 - IEICE TRANSACTIONS on Communications
SP - 2041
EP - 2048
AU - Takashi ASAHARA
AU - Toshiharu KOJIMA
AU - Makoto MIYAKE
PY - 1999
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E82-B
IS - 12
JA - IEICE TRANSACTIONS on Communications
Y1 - December 1999
AB - This paper proposes a coherent detection scheme that can reduce the estimation errors of the carrier phase due to Gaussian noise in communication systems where pilot symbol assisted modulation is employed to compensate for Rician fading distortion. This paper introduces two functions in addition to conventional fading estimation methods using Wiener interpolation, etc. The first is the weighted average function for reducing the estimation errors of the fading distortion detected by pilot symbols. The second is the moving average function for estimating the phase errors that are residual after being compensated for by the estimated fading distortion. This paper evaluates the bit error rate (BER) performance for the proposed method in both Rician fading channel and additive white Gaussian noise (AWGN) channel by computer simulation. Simulation results verify that the BER performance of the proposed method is superior to that of a conventional method in both Rician fading channel and AWGN channel. Simulation results also confirm that the degradation of the BER performance of the proposed method is only 0.1 dB in AWGN channel and only 0.3 dB in Rician fading channel compared with the theoretical curves even if we reduce the number of computations by simplifying the calculation of interpolation coefficients optimized for Wiener interpolation.
ER -