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
W-CDMA(광대역 직접 시퀀스 코드 분할 다중 접속) 역방향 링크에서 링크 용량을 증가시키기 위해 직렬(연속) 유형을 사용하는 것보다 병렬형 COMSIC(Coherent Multi-Stage Interference Canceller)을 사용하는 것이 더 실용적입니다. 직렬형에 비해 간섭 억제 효과는 떨어지지만, 처리 지연이 짧은 고유한 장점으로 인해 발생합니다. 따라서 본 논문에서는 병렬형 COMSIC의 간섭 억제 효과를 향상시키기 위해 각 제거 단계에서 파일럿 및 결정-피드백 데이터 심볼을 모두 사용하는 반복 채널 추정(ICE)을 갖춘 병렬형 COMSIC을 제안한다. 컴퓨터 시뮬레이션 결과는 FEC 디코딩 후 ICE를 갖춘 병렬형 COMSIC을 적용하면 고립된 셀의 용량이 파일럿 심볼만을 사용하여 채널 추정을 통해 기존 병렬형 COMSIC보다 약 1.6(2.5)배 증가할 수 있음을 보여줍니다. MF 기반 레이크 수신기) 필요한 평균 전송 Eb/N0 즉, 간섭이 제한된 채널에서 15dB입니다. 결과는 또한 FEC 디코딩 후 ICE가 있는 병렬형 COMSIC을 갖는 격리 셀의 용량이 FEC 디코딩 후 ICE가 있는 직렬형 COMSIC의 용량에 비해 약 6% 저하되지만 처리 지연은 더 클 수 있음을 보여줍니다. 특히 활성 사용자 수가 많은 경우에는 동시 병렬 작업으로 인해 크게 감소했습니다.
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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
부
@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},}
부
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 -