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
정확한 비트 오류 확률(BEP)은 초광대역(UWB)에 잠재적으로 응용할 수 있는 DS-(이진 펄스 직접 시퀀스) 및 DS/TH-CDMA(하이브리드 직접 시퀀스 시간 호핑 코드 분할 다중 접속) 시스템에 대해 폐쇄형으로 파생됩니다. ) 통신. Flat Nakagami 페이딩 채널을 고려하고 특성 함수(CF) 방법을 채택합니다. CF의 정확한 표현은 임의의 펄스 형태에 대해 간단하고 좋은 간단한 방법을 통해 얻어집니다. 그런 다음 CF는 향상된 가우스 근사(IGA)를 기반으로 하는 방법보다 계산 복잡성이 덜 필요한 정확한 BEP를 얻는 데 사용됩니다. 동일한 작동 조건에서 CF의 모양과 BEP가 두 시스템에서 상당히 다르다는 것을 알 수 있습니다. 두 시스템 모두 페이드가 심한 채널에서 비슷한 성능을 발휘하지만 하이브리드 시스템은 페이드가 약한 채널에서 더 나은 BEP 성능을 보여줍니다. CF와 BEP는 또한 처리 이득(PG)을 구성하는 칩 길이와 칩 듀티에 크게 의존합니다. 매개변수의 서로 다른 조합은 동일한 PG가 될 수 있으며 일정한 PG에 대한 특정 시스템의 BEP는 페이딩이 심한 채널에서는 거의 일정하게 유지되지만 페이딩이 약한 채널에서는 실질적으로 달라질 수 있습니다. 정확한 방법의 결과와 표준 가우스 근사법(SGA)의 결과를 비교하면 SGA가 페이딩이 심한 채널의 두 시스템 모두에 대해 정확하지만 페이드가 약한 채널의 저부하 시스템에 대해서는 매우 낙관적임을 알 수 있습니다. SGA는 또한 여러 가지 다른 시스템 상충관계를 추적하지 못합니다.
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Mohammad Azizur RAHMAN, Shigenobu SASAKI, Hisakazu KIKUCHI, Hiroshi HARADA, Shuzo KATO, "Exact Error Rate Analysis for Pulsed DS- and Hybrid DS/TH-CDMA in Nakagami Fading" in IEICE TRANSACTIONS on Fundamentals,
vol. E91-A, no. 11, pp. 3150-3162, November 2008, doi: 10.1093/ietfec/e91-a.11.3150.
Abstract: Exact bit error probabilities (BEP) are derived in closed-form for binary pulsed direct sequence (DS-) and hybrid direct sequence time hopping code division multiple access (DS/TH-CDMA) systems that have potential applications in ultra-wideband (UWB) communications. Flat Nakagami fading channel is considered and the characteristic function (CF) method is adopted. An exact expression of the CF is obtained through a straightforward method, which is simple and good for any arbitrary pulse shape. The CF is then used to obtain the exact BEP that requires less computational complexity than the method based on improved Gaussian approximation (IGA). It is shown under identical operating conditions that the shape of the CF, as well as, the BEP differs considerably for the two systems. While both the systems perform comparably in heavily faded channel, the hybrid system shows better BEP performance in lightly-faded channel. The CF and BEP also strongly depend on chip length and chip-duty that constitute the processing gain (PG). Different combinations of the parameters may result into the same PG and the BEP of a particular system for a constant PG, though remains nearly constant in a highly faded channel, may vary substantially in lightly-faded channel. A comparison of the results from the exact method with those from the standard Gaussian approximation (SGA) reveals that the SGA, though accurate for both the systems in highly-faded channel, becomes extremely optimistic for low-duty systems in lightly-faded channel. The SGA also fails to track several other system trade-offs.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e91-a.11.3150/_p
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@ARTICLE{e91-a_11_3150,
author={Mohammad Azizur RAHMAN, Shigenobu SASAKI, Hisakazu KIKUCHI, Hiroshi HARADA, Shuzo KATO, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Exact Error Rate Analysis for Pulsed DS- and Hybrid DS/TH-CDMA in Nakagami Fading},
year={2008},
volume={E91-A},
number={11},
pages={3150-3162},
abstract={Exact bit error probabilities (BEP) are derived in closed-form for binary pulsed direct sequence (DS-) and hybrid direct sequence time hopping code division multiple access (DS/TH-CDMA) systems that have potential applications in ultra-wideband (UWB) communications. Flat Nakagami fading channel is considered and the characteristic function (CF) method is adopted. An exact expression of the CF is obtained through a straightforward method, which is simple and good for any arbitrary pulse shape. The CF is then used to obtain the exact BEP that requires less computational complexity than the method based on improved Gaussian approximation (IGA). It is shown under identical operating conditions that the shape of the CF, as well as, the BEP differs considerably for the two systems. While both the systems perform comparably in heavily faded channel, the hybrid system shows better BEP performance in lightly-faded channel. The CF and BEP also strongly depend on chip length and chip-duty that constitute the processing gain (PG). Different combinations of the parameters may result into the same PG and the BEP of a particular system for a constant PG, though remains nearly constant in a highly faded channel, may vary substantially in lightly-faded channel. A comparison of the results from the exact method with those from the standard Gaussian approximation (SGA) reveals that the SGA, though accurate for both the systems in highly-faded channel, becomes extremely optimistic for low-duty systems in lightly-faded channel. The SGA also fails to track several other system trade-offs.},
keywords={},
doi={10.1093/ietfec/e91-a.11.3150},
ISSN={1745-1337},
month={November},}
부
TY - JOUR
TI - Exact Error Rate Analysis for Pulsed DS- and Hybrid DS/TH-CDMA in Nakagami Fading
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 3150
EP - 3162
AU - Mohammad Azizur RAHMAN
AU - Shigenobu SASAKI
AU - Hisakazu KIKUCHI
AU - Hiroshi HARADA
AU - Shuzo KATO
PY - 2008
DO - 10.1093/ietfec/e91-a.11.3150
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E91-A
IS - 11
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - November 2008
AB - Exact bit error probabilities (BEP) are derived in closed-form for binary pulsed direct sequence (DS-) and hybrid direct sequence time hopping code division multiple access (DS/TH-CDMA) systems that have potential applications in ultra-wideband (UWB) communications. Flat Nakagami fading channel is considered and the characteristic function (CF) method is adopted. An exact expression of the CF is obtained through a straightforward method, which is simple and good for any arbitrary pulse shape. The CF is then used to obtain the exact BEP that requires less computational complexity than the method based on improved Gaussian approximation (IGA). It is shown under identical operating conditions that the shape of the CF, as well as, the BEP differs considerably for the two systems. While both the systems perform comparably in heavily faded channel, the hybrid system shows better BEP performance in lightly-faded channel. The CF and BEP also strongly depend on chip length and chip-duty that constitute the processing gain (PG). Different combinations of the parameters may result into the same PG and the BEP of a particular system for a constant PG, though remains nearly constant in a highly faded channel, may vary substantially in lightly-faded channel. A comparison of the results from the exact method with those from the standard Gaussian approximation (SGA) reveals that the SGA, though accurate for both the systems in highly-faded channel, becomes extremely optimistic for low-duty systems in lightly-faded channel. The SGA also fails to track several other system trade-offs.
ER -