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
우리는 대략적으로 동기화된(AS) CDMA를 기반으로 하는 SS-CDMA(확산 스펙트럼 코드 분할 다중 접속) 유연한 무선 네트워크의 셀 내 업링크를 제안했습니다. AS-CDMA는 동일채널 간섭이 없기 때문에 복잡한 전송전력제어(TPC)가 필요하지 않습니다. AS-CDMA 모뎀은 일본의 2.4GHz 산업, 과학 및 의료(ISM) 대역용으로 설계 및 구현되었습니다. 구현된 모뎀을 사용하면 성능이 저하됩니다. Eb/N0 이론적 한계는 비트 오류율(BER) 1.0에서 10dB입니다.-3. 2-사용자 환경에서 CNR(반송파 대 잡음비)의 저하는 BER 0.5에서 10dB입니다.-3 원하는 신호 대 원하지 않는 신호 비율(DUR)이 -20.3dB인 경우. 우리는 컴퓨터 시뮬레이션을 통해 다양한 반송파 주파수 오프셋과 중간 DUR의 경우 BER 성능을 평가했습니다. 8-사용자 환경에서 반송파 주파수 오프셋 0.3ppm에서 DUR이 -16dB인 BER은 10인 것으로 나타났습니다.-3. 4단계 개방 루프 TPC 기술을 갖춘 AS-CDMA를 사용하면 셀 내 업링크 설계가 가능합니다.
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Suguru KAMEDA, Kouichi TAKAHASHI, Hiroyuki NAKASE, Kazuo TSUBOUCHI, "SS-CDMA Flexible Wireless Network: Implementation of Approximately Synchronized CDMA Modem for Uplink" in IEICE TRANSACTIONS on Fundamentals,
vol. E85-A, no. 3, pp. 694-702, March 2002, doi: .
Abstract: We have proposed an intracell uplink of a spread-spectrum code-division multiple-access (SS-CDMA) flexible wireless network based on approximately synchronized (AS) CDMA. Since the AS-CDMA has no co-channel interference, complicated transmission power control (TPC) is not required. A modem of the AS-CDMA has been designed and implemented for the Japanese 2.4 GHz industrial, scientific and medical (ISM) band. Using the implemented modem, the degradation of Eb/N0 from the theoretical limit is 1.0 dB at a bit error rate (BER) of 10-3. Under 2-user environment, the degradation of carrier-to-noise ratio (CNR) is 0.5 dB at a BER of 10-3 when the desired-to-undesired signal ratio (DUR) is -20.3 dB. We have evaluated BER performances in cases of varying carrier frequency offset and median DUR with computer simulation. Under 8-user environment, at the carrier frequency offset of 0.3 ppm, the BER with the DUR of -16 dB is found to be 10-3. Using the AS-CDMA with a 4-step open-loop TPC technique, the design of intracell uplink is available.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e85-a_3_694/_p
부
@ARTICLE{e85-a_3_694,
author={Suguru KAMEDA, Kouichi TAKAHASHI, Hiroyuki NAKASE, Kazuo TSUBOUCHI, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={SS-CDMA Flexible Wireless Network: Implementation of Approximately Synchronized CDMA Modem for Uplink},
year={2002},
volume={E85-A},
number={3},
pages={694-702},
abstract={We have proposed an intracell uplink of a spread-spectrum code-division multiple-access (SS-CDMA) flexible wireless network based on approximately synchronized (AS) CDMA. Since the AS-CDMA has no co-channel interference, complicated transmission power control (TPC) is not required. A modem of the AS-CDMA has been designed and implemented for the Japanese 2.4 GHz industrial, scientific and medical (ISM) band. Using the implemented modem, the degradation of Eb/N0 from the theoretical limit is 1.0 dB at a bit error rate (BER) of 10-3. Under 2-user environment, the degradation of carrier-to-noise ratio (CNR) is 0.5 dB at a BER of 10-3 when the desired-to-undesired signal ratio (DUR) is -20.3 dB. We have evaluated BER performances in cases of varying carrier frequency offset and median DUR with computer simulation. Under 8-user environment, at the carrier frequency offset of 0.3 ppm, the BER with the DUR of -16 dB is found to be 10-3. Using the AS-CDMA with a 4-step open-loop TPC technique, the design of intracell uplink is available.},
keywords={},
doi={},
ISSN={},
month={March},}
부
TY - JOUR
TI - SS-CDMA Flexible Wireless Network: Implementation of Approximately Synchronized CDMA Modem for Uplink
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 694
EP - 702
AU - Suguru KAMEDA
AU - Kouichi TAKAHASHI
AU - Hiroyuki NAKASE
AU - Kazuo TSUBOUCHI
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E85-A
IS - 3
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - March 2002
AB - We have proposed an intracell uplink of a spread-spectrum code-division multiple-access (SS-CDMA) flexible wireless network based on approximately synchronized (AS) CDMA. Since the AS-CDMA has no co-channel interference, complicated transmission power control (TPC) is not required. A modem of the AS-CDMA has been designed and implemented for the Japanese 2.4 GHz industrial, scientific and medical (ISM) band. Using the implemented modem, the degradation of Eb/N0 from the theoretical limit is 1.0 dB at a bit error rate (BER) of 10-3. Under 2-user environment, the degradation of carrier-to-noise ratio (CNR) is 0.5 dB at a BER of 10-3 when the desired-to-undesired signal ratio (DUR) is -20.3 dB. We have evaluated BER performances in cases of varying carrier frequency offset and median DUR with computer simulation. Under 8-user environment, at the carrier frequency offset of 0.3 ppm, the BER with the DUR of -16 dB is found to be 10-3. Using the AS-CDMA with a 4-step open-loop TPC technique, the design of intracell uplink is available.
ER -