Performance of M‐ary/SSMA using soft decision Viterbi decoding
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| Název: | Performance of M‐ary/SSMA using soft decision Viterbi decoding |
|---|---|
| Autoři: | Ito, Katsuyuki, Hamamura, Masanori, Tachikawa, Shin'ichi |
| Zdroj: | Electronics and Communications in Japan (Part III: Fundamental Electronic Science) ; volume 85, issue 6, page 11-20 ; ISSN 1042-0967 1520-6440 |
| Informace o vydavateli: | Wiley |
| Rok vydání: | 2002 |
| Sbírka: | Wiley Online Library (Open Access Articles via Crossref) |
| Popis: | In this paper, we discuss the performance of M‐ary/SSMA and M‐ary/SSMA systems using convolutional code and co‐channel interference (CCI) cancellation techniques. First, we show a proposed system model and describe a soft decision method of M‐ary/SS which can operate soft decision Viterbi decoding. Next, we evaluate the system performance in an AWGN environment and a Rayleigh fading environment by computer simulations. As a result, spectral efficiency of the system using convolutional code is improved in both environments, though its effects depend on the coding rate. Finally, we discuss the systems using CCI cancellation and convolutional code. As a result, when the spreading factor becomes large, its performance becomes inferior to that of the system which applies no convolutional code in an AWGN environment. However, under a Rayleigh fading environment, a considerable improvement of the performance can be obtained. © 2002 Scripta Technica, Electron Comm Jpn Pt 3, 85(6): 11–20, 2002 |
| Druh dokumentu: | article in journal/newspaper |
| Jazyk: | English |
| DOI: | 10.1002/ecjc.1097 |
| Dostupnost: | https://doi.org/10.1002/ecjc.1097 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fecjc.1097 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ecjc.1097 |
| Rights: | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| Přístupové číslo: | edsbas.2E4563ED |
| Databáze: | BASE |
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| Items | – Name: Title Label: Title Group: Ti Data: Performance of M‐ary/SSMA using soft decision Viterbi decoding – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ito%2C+Katsuyuki%22">Ito, Katsuyuki</searchLink><br /><searchLink fieldCode="AR" term="%22Hamamura%2C+Masanori%22">Hamamura, Masanori</searchLink><br /><searchLink fieldCode="AR" term="%22Tachikawa%2C+Shin'ichi%22">Tachikawa, Shin'ichi</searchLink> – Name: TitleSource Label: Source Group: Src Data: Electronics and Communications in Japan (Part III: Fundamental Electronic Science) ; volume 85, issue 6, page 11-20 ; ISSN 1042-0967 1520-6440 – Name: Publisher Label: Publisher Information Group: PubInfo Data: Wiley – Name: DatePubCY Label: Publication Year Group: Date Data: 2002 – Name: Subset Label: Collection Group: HoldingsInfo Data: Wiley Online Library (Open Access Articles via Crossref) – Name: Abstract Label: Description Group: Ab Data: In this paper, we discuss the performance of M‐ary/SSMA and M‐ary/SSMA systems using convolutional code and co‐channel interference (CCI) cancellation techniques. First, we show a proposed system model and describe a soft decision method of M‐ary/SS which can operate soft decision Viterbi decoding. Next, we evaluate the system performance in an AWGN environment and a Rayleigh fading environment by computer simulations. As a result, spectral efficiency of the system using convolutional code is improved in both environments, though its effects depend on the coding rate. Finally, we discuss the systems using CCI cancellation and convolutional code. As a result, when the spreading factor becomes large, its performance becomes inferior to that of the system which applies no convolutional code in an AWGN environment. However, under a Rayleigh fading environment, a considerable improvement of the performance can be obtained. © 2002 Scripta Technica, Electron Comm Jpn Pt 3, 85(6): 11–20, 2002 – Name: TypeDocument Label: Document Type Group: TypDoc Data: article in journal/newspaper – Name: Language Label: Language Group: Lang Data: English – Name: DOI Label: DOI Group: ID Data: 10.1002/ecjc.1097 – Name: URL Label: Availability Group: URL Data: https://doi.org/10.1002/ecjc.1097<br />https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fecjc.1097<br />https://onlinelibrary.wiley.com/doi/pdf/10.1002/ecjc.1097 – Name: Copyright Label: Rights Group: Cpyrght Data: http://onlinelibrary.wiley.com/termsAndConditions#vor – Name: AN Label: Accession Number Group: ID Data: edsbas.2E4563ED |
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