NDLI: New results on the application of antenna diversity and turbo-codes in a JD-CDMA mobile radio system

Content Provider	IEEE Xplore Digital Library
Author	Nasshan, M. Jung, P.
Copyright Year	1994
Description	Author affiliation: Res. Group for RF Commun., Kaiserslautern Univ., Germany (Nasshan, M.; Jung, P.)
Abstract	The use of coherent receiver antenna diversity (CRAD) in combination with powerful channel coding is advisable in order to obtain sufficient quality in digital mobile radio systems. The application of both CRAD and a novel convolutional code termed the turbo-code to the uplink of a joint detection (JD) code division multiple access (CDMA) mobile radio system is considered. New results on the coded error performance obtained by using the well-known powerful JD techniques zero forcing block decision feedback equalization, minimum mean square error block linear equalization, and minimum mean square error block decision feedback equalization, which were extended to CRAD with maximal-ratio combining, are presented when either one or two receiver antennas are applied. Both bit and frame error rates, respectively, are introduced and compared with formerly published results. The performance enhancement is demonstrated. Furthermore, it is shown that there is a linear dependence between the bit as well as frame error rate and the variance of the log-likelihood ratios generated by the turbo-code decoder. Therefore, the turbo-code decoder can provide information about the current system performance by estimating the variance of the log-likelihood ratios.
Starting Page	524
Ending Page	528
File Size	633781
Page Count	5
File Format	PDF
ISBN	9051991932
DOI	10.1109/WNCMF.1994.529145
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-09-18
Publisher Place	Netherlands
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Turbo codes Diversity reception Decision feedback equalizers Receiving antennas Land mobile radio Multiaccess communication Mean square error methods Error analysis Decoding Receivers
Content Type	Text
Resource Type	Article

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