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
A fim de aumentar a capacidade do link no link reverso de acesso múltiplo por divisão de código de seqüência direta de banda larga (W-CDMA), empregar um cancelador de interferência de vários estágios coerente do tipo paralelo (COMSIC) é mais prático do que empregar um tipo serial (sucessivo). devido à sua vantagem inerente de um curto atraso de processamento, embora seu efeito de supressão de interferência seja inferior ao do tipo serial. Portanto, este artigo propõe um COMSIC do tipo paralelo com estimativa de canal iterativo (ICE) usando símbolos de dados piloto e de feedback de decisão em cada estágio de cancelamento, a fim de melhorar o efeito de supressão de interferência do COMSIC do tipo paralelo. Os resultados da simulação computacional demonstram que, ao aplicar o COMSIC do tipo paralelo com ICE após a decodificação FEC, a capacidade em uma célula isolada pode ser aumentada em aproximadamente 1.6 (2.5) vezes a do COMSIC do tipo paralelo convencional com estimativa de canal usando apenas símbolos piloto ( o receptor Rake baseado em MF) na transmissão média necessária Eb/N0 de 15 dB, ou seja, no canal com interferência limitada. Os resultados também mostram que, embora a capacidade na célula isolada com o COMSIC do tipo paralelo com ICE após a decodificação FEC seja degradada em aproximadamente 6% em comparação com aquela do COMSIC do tipo serial com ICE após a decodificação FEC, o atraso de processamento pode ser diminuiu significativamente devido à operação paralela simultânea, especialmente quando o número de usuários ativos é grande.
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
Koichi OKAWA, Kenichi HIGUCHI, Mamoru SAWAHASHI, "Parallel-Type Coherent Multi-Stage Interference Canceller with Iterative Channel Estimation Using Both Pilot and Decision-Feedback Data Symbols for W-CDMA Mobile Radio" in IEICE TRANSACTIONS on Communications,
vol. E84-B, no. 3, pp. 446-456, March 2001, doi: .
Abstract: In order to increase the link capacity in the wideband direct sequence code division multiple access (W-CDMA) reverse link, employing a parallel-type coherent multi-stage interference canceller (COMSIC) is more practical than employing a serial (successive)-type due to its inherent advantage of a short processing delay, although its interference suppression effect is inferior to that of the serial-type. Therefore, this paper proposes a parallel-type COMSIC with iterative channel estimation (ICE) using both pilot and decision-feedback data symbols at each canceling stage in order to improve the interference suppression effect of the parallel-type COMSIC. Computer simulation results demonstrate that by applying the parallel-type COMSIC with ICE after FEC decoding, the capacity in an isolated cell can be increased by approximately 1.6 (2.5) times that of the conventional parallel-type COMSIC with channel estimation using only pilot symbols (the MF-based Rake receiver) at the required average transmit Eb/N0 of 15 dB, i.e. in the interference-limited channel. The results also show that, although the capacity in the isolated cell with the parallel-type COMSIC with ICE after FEC decoding is degraded by approximately 6% compared to that with the serial-type COMSIC with ICE after FEC decoding, the processing delay can be significantly decreased owing to the simultaneous parallel operation especially when the number of active users is large.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e84-b_3_446/_p
Copiar
@ARTICLE{e84-b_3_446,
author={Koichi OKAWA, Kenichi HIGUCHI, Mamoru SAWAHASHI, },
journal={IEICE TRANSACTIONS on Communications},
title={Parallel-Type Coherent Multi-Stage Interference Canceller with Iterative Channel Estimation Using Both Pilot and Decision-Feedback Data Symbols for W-CDMA Mobile Radio},
year={2001},
volume={E84-B},
number={3},
pages={446-456},
abstract={In order to increase the link capacity in the wideband direct sequence code division multiple access (W-CDMA) reverse link, employing a parallel-type coherent multi-stage interference canceller (COMSIC) is more practical than employing a serial (successive)-type due to its inherent advantage of a short processing delay, although its interference suppression effect is inferior to that of the serial-type. Therefore, this paper proposes a parallel-type COMSIC with iterative channel estimation (ICE) using both pilot and decision-feedback data symbols at each canceling stage in order to improve the interference suppression effect of the parallel-type COMSIC. Computer simulation results demonstrate that by applying the parallel-type COMSIC with ICE after FEC decoding, the capacity in an isolated cell can be increased by approximately 1.6 (2.5) times that of the conventional parallel-type COMSIC with channel estimation using only pilot symbols (the MF-based Rake receiver) at the required average transmit Eb/N0 of 15 dB, i.e. in the interference-limited channel. The results also show that, although the capacity in the isolated cell with the parallel-type COMSIC with ICE after FEC decoding is degraded by approximately 6% compared to that with the serial-type COMSIC with ICE after FEC decoding, the processing delay can be significantly decreased owing to the simultaneous parallel operation especially when the number of active users is large.},
keywords={},
doi={},
ISSN={},
month={March},}
Copiar
TY - JOUR
TI - Parallel-Type Coherent Multi-Stage Interference Canceller with Iterative Channel Estimation Using Both Pilot and Decision-Feedback Data Symbols for W-CDMA Mobile Radio
T2 - IEICE TRANSACTIONS on Communications
SP - 446
EP - 456
AU - Koichi OKAWA
AU - Kenichi HIGUCHI
AU - Mamoru SAWAHASHI
PY - 2001
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E84-B
IS - 3
JA - IEICE TRANSACTIONS on Communications
Y1 - March 2001
AB - In order to increase the link capacity in the wideband direct sequence code division multiple access (W-CDMA) reverse link, employing a parallel-type coherent multi-stage interference canceller (COMSIC) is more practical than employing a serial (successive)-type due to its inherent advantage of a short processing delay, although its interference suppression effect is inferior to that of the serial-type. Therefore, this paper proposes a parallel-type COMSIC with iterative channel estimation (ICE) using both pilot and decision-feedback data symbols at each canceling stage in order to improve the interference suppression effect of the parallel-type COMSIC. Computer simulation results demonstrate that by applying the parallel-type COMSIC with ICE after FEC decoding, the capacity in an isolated cell can be increased by approximately 1.6 (2.5) times that of the conventional parallel-type COMSIC with channel estimation using only pilot symbols (the MF-based Rake receiver) at the required average transmit Eb/N0 of 15 dB, i.e. in the interference-limited channel. The results also show that, although the capacity in the isolated cell with the parallel-type COMSIC with ICE after FEC decoding is degraded by approximately 6% compared to that with the serial-type COMSIC with ICE after FEC decoding, the processing delay can be significantly decreased owing to the simultaneous parallel operation especially when the number of active users is large.
ER -