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
Os sistemas de diversidade de transmissão baseados na codificação ortogonal de blocos de espaço-tempo (OSTBC) geralmente sofrem com perda de taxa e dispersão de potência. O esquema adequado de seleção de antena pode ajudar a utilizar de forma mais eficaz as antenas de transmissão e a potência de transmissão em tais sistemas. Neste artigo, propomos um novo esquema de seleção de antenas para tais sistemas baseado na ideia de comutação de antenas. Em particular, visando reduzir o número de canais piloto e cadeias de RF, o transmissor agora substitui as antenas com o SNR recebido mais baixo por outras não utilizadas se o SNR de saída do decodificador de espaço-tempo no receptor estiver abaixo de um determinado limite. Com este novo esquema, não só o número de canais piloto e cadeias de RF a serem implementadas diminui, como também a quantidade média de informação de feedback é reduzida. Para analisar o desempenho deste esquema, derivamos a forma fechada integral exata para a função de densidade de probabilidade (PDF) do SNR recebido. Mostramos através de exemplos numéricos que o esquema proposto oferece melhor desempenho que os sistemas OSTBC tradicionais utilizando todas as antenas de transmissão disponíveis, com uma pequena quantidade de informação de feedback. Também examinamos o efeito de diferentes configurações de antena e atraso de feedback.
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Ki-Hong PARK, Hong-Chuan YANG, Young-Chai KO, "Performance Analysis of Transmit Diversity Systems with Multiple Antenna Replacement" in IEICE TRANSACTIONS on Communications,
vol. E91-B, no. 10, pp. 3281-3287, October 2008, doi: 10.1093/ietcom/e91-b.10.3281.
Abstract: Transmit diversity systems based on orthogonal space-time block coding (OSTBC) usually suffer from rate loss and power spreading. Proper antenna selection scheme can help to more effectively utilize the transmit antennas and transmission power in such systems. In this paper, we propose a new antenna selection scheme for such systems based on the idea of antenna switching. In particular, targeting at reducing the number of pilot channels and RF chains, the transmitter now replaces the antennas with the lowest received SNR with unused ones if the output SNR of space time decoder at the receiver is below a certain threshold. With this new scheme, not only the number of pilot channels and RF chains to be implemented is decreased, the average amount of feedback information is also reduced. To analyze the performance of this scheme, we derive the exact integral closed form for the probability density function (PDF) of the received SNR. We show through numerical examples that the proposed scheme offers better performance than traditional OSTBC systems using all available transmitting antennas, with a small amount of feedback information. We also examine the effect of different antenna configuration and feedback delay.
URL: https://global.ieice.org/en_transactions/communications/10.1093/ietcom/e91-b.10.3281/_p
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@ARTICLE{e91-b_10_3281,
author={Ki-Hong PARK, Hong-Chuan YANG, Young-Chai KO, },
journal={IEICE TRANSACTIONS on Communications},
title={Performance Analysis of Transmit Diversity Systems with Multiple Antenna Replacement},
year={2008},
volume={E91-B},
number={10},
pages={3281-3287},
abstract={Transmit diversity systems based on orthogonal space-time block coding (OSTBC) usually suffer from rate loss and power spreading. Proper antenna selection scheme can help to more effectively utilize the transmit antennas and transmission power in such systems. In this paper, we propose a new antenna selection scheme for such systems based on the idea of antenna switching. In particular, targeting at reducing the number of pilot channels and RF chains, the transmitter now replaces the antennas with the lowest received SNR with unused ones if the output SNR of space time decoder at the receiver is below a certain threshold. With this new scheme, not only the number of pilot channels and RF chains to be implemented is decreased, the average amount of feedback information is also reduced. To analyze the performance of this scheme, we derive the exact integral closed form for the probability density function (PDF) of the received SNR. We show through numerical examples that the proposed scheme offers better performance than traditional OSTBC systems using all available transmitting antennas, with a small amount of feedback information. We also examine the effect of different antenna configuration and feedback delay.},
keywords={},
doi={10.1093/ietcom/e91-b.10.3281},
ISSN={1745-1345},
month={October},}
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TY - JOUR
TI - Performance Analysis of Transmit Diversity Systems with Multiple Antenna Replacement
T2 - IEICE TRANSACTIONS on Communications
SP - 3281
EP - 3287
AU - Ki-Hong PARK
AU - Hong-Chuan YANG
AU - Young-Chai KO
PY - 2008
DO - 10.1093/ietcom/e91-b.10.3281
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E91-B
IS - 10
JA - IEICE TRANSACTIONS on Communications
Y1 - October 2008
AB - Transmit diversity systems based on orthogonal space-time block coding (OSTBC) usually suffer from rate loss and power spreading. Proper antenna selection scheme can help to more effectively utilize the transmit antennas and transmission power in such systems. In this paper, we propose a new antenna selection scheme for such systems based on the idea of antenna switching. In particular, targeting at reducing the number of pilot channels and RF chains, the transmitter now replaces the antennas with the lowest received SNR with unused ones if the output SNR of space time decoder at the receiver is below a certain threshold. With this new scheme, not only the number of pilot channels and RF chains to be implemented is decreased, the average amount of feedback information is also reduced. To analyze the performance of this scheme, we derive the exact integral closed form for the probability density function (PDF) of the received SNR. We show through numerical examples that the proposed scheme offers better performance than traditional OSTBC systems using all available transmitting antennas, with a small amount of feedback information. We also examine the effect of different antenna configuration and feedback delay.
ER -