{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,1]],"date-time":"2025-02-01T05:30:24Z","timestamp":1738387824613,"version":"3.35.0"},"reference-count":20,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2008,9,12]],"date-time":"2008-09-12T00:00:00Z","timestamp":1221177600000},"content-version":"vor","delay-in-days":3603,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Trans Emerging Tel Tech"],"published-print":{"date-parts":[[1998,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>This paper concerns the optimisation of a DS\u2010CDMA based mobile communication system with respect to the transmission quality in the case of data and video services respectively. For combatting transmission errors, forward error protection based on convolutional codes and interleaving in connection with soft decision maximum\u2010likelihood (ML) decoding through the Viterbi algorithm is applied. In this context, a technique to generate post\u2010decision reliability information in the case of a noncoherent DS\u2010CDMA receiver for a given ML metric is presented. The proposed error control strategy involves the application of equal error protection for raw data transmission with the average post\u2010decoding<jats:italic>BER<\/jats:italic>as an optimisation criterion. In the case of a video transmission, a\u2010priori knowledge regarding the error sensitivity of individual parameter sets suggests an unequal error protection strategy based on punctured convolutional codes, where the segmental<jats:italic>SNR<\/jats:italic>at the source codec output represents the optimisation criterion. Due to the high complexity of the system under investigation, corresponding results are obtained through simulation of the point\u2010to\u2010point transmission link. A significant gain regarding the achievable transmission quality with respect to conventional approaches can be achieved in connection with a compound design of source coding, channel coding and spectral spreading.<\/jats:p>","DOI":"10.1002\/ett.4460090604","type":"journal-article","created":{"date-parts":[[2008,9,12]],"date-time":"2008-09-12T16:20:23Z","timestamp":1221236423000},"page":"497-506","source":"Crossref","is-referenced-by-count":3,"title":["On the optimisation of a noncoherent CDMA system based on<i>M<\/i>\u2010ary orthogonal modulation"],"prefix":"10.1002","volume":"9","author":[{"given":"Marcus","family":"Benthin","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rodolfo Mann","family":"Pelz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Karl\u2010Dirk","family":"Kammeyer","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dirk","family":"Nikolai","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2008,9,12]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"crossref","unstructured":"A.Salmasi K.Gilhousen:On the system design aspects of Code Division Multiple Access (CDMA) applied to digital cellular and personal communication networks. \u201cProc. IEEE Vehicular Technology\u201d St. Louis May1991 p.57\u201362.","DOI":"10.1109\/VETEC.1991.140445"},{"key":"e_1_2_1_3_2","doi-asserted-by":"publisher","DOI":"10.1109\/26.223780"},{"key":"e_1_2_1_4_2","doi-asserted-by":"publisher","DOI":"10.1109\/98.295356"},{"key":"e_1_2_1_5_2","unstructured":"TIA\/EIAInterim Standard IS\u201095:Mobile station \u2014 base station compatibility standard for dual\u2010mode wideband spread spectrum cellular system. \u201cTelecommunications Industry Association\u201d July1993."},{"key":"e_1_2_1_6_2","unstructured":"A.Baier:An open multi\u2010rate radio interface based on DS\u2010CDMA \u2010 The radio interface concept of CODIT. \u201cProc. Race Mobile Telecommunication Workshop\u201d Metz June1993 p.123\u2013128."},{"volume-title":"Vergleich koh\u00e4renter und inkoh\u00e4renter Codemultiplex\u2010\u00dcbertragungskonzepte f\u00fcr zellulare Mobilfunksysteme","year":"1996","author":"Benthin M.","key":"e_1_2_1_7_2"},{"key":"e_1_2_1_8_2","unstructured":"J.Hagenauer:Viterbi decoding of convolutional codes for fading and burst channels. Proc. of the 1980 Zurich Seminar on Digital Communications IEEE Cat. No. 80CH1521\u20104 1980 p.G2.1\u2013G2.7."},{"key":"e_1_2_1_9_2","doi-asserted-by":"publisher","DOI":"10.1109\/26.141453"},{"key":"e_1_2_1_10_2","unstructured":"M.Benthin K. 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Dallas Texas Vol. 3 1989 p.1680\u20131686."},{"key":"e_1_2_1_17_2","doi-asserted-by":"crossref","unstructured":"P.Hoeher:Unequal error protection for digital mobile DS\u2010CDMA systems. Proc. IEEE Int. Conference on Communications (ICC'94) May1994 p.1236\u20131241.","DOI":"10.1109\/ICC.1994.368905"},{"key":"e_1_2_1_18_2","doi-asserted-by":"publisher","DOI":"10.1109\/78.91143"},{"key":"e_1_2_1_19_2","doi-asserted-by":"crossref","unstructured":"R.Mann Pelz:An unequal error protected p \u00d7 8 kbit\/s video transmission for DECT. Proc. IEEE Vehicular Techn. 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