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Title: Suitable Spreading Sequences for Asynchronous MC-CDMA Systems, Journal of Telecommunications and Information Technology, 2018, nr 3

Creator:

Djebbari, Ali ; Addad, Mouad

Date:

2018, nr 3

Resource Type:

artykuł

Description:

In order to meet the demand of high data rate transmission with good quality maintained, the multi-carrier code division multiple access (MC-CDMA) technology is considered for the next generation wireless communication systems. However, their high crest factor (CF) is one of the major drawbacks of multi-carrier transmission systems. Thus, CF reduction is one of the most important research areas in MC-CDMA systems. In addition, asynchronous MC-CDMA suffers from the effect of multiple access interference (MAI), caused by all users active in the system. Degradation of the system’s bit error rate (BER) caused by MAI must be taken into consideration as well. The aim of this paper is to provide a comparative study on the enhancement of performance of an MC-CDMA system. The spreading sequences used in CDMA play an important role in CF and interference reduction. Hence, spreading sequences should be selected to simultaneously ensure low CF and low BER values. Therefore, the effect that correlation properties of sequences exert on CF values is investigated in this study. Furthermore, a numerical BER evaluation, as a function of the signal-to-noise ratio (SNR) and the number of users, is provided. The results obtained indicate that a trade-off between the two criteria is necessary to ensure good performance. It was concluded that zero correlation zone (ZCZ) sequences are the most suitable spreading sequences as far as the satisfaction of the above criteria is concerned.

Publisher:

Instytut Łączności - Państwowy Instytut Badawczy

Format:

application/pdf

Resource Identifier:

ISSN 1509-4553, on-line: ISSN 1899-8852 ; oai:bc.itl.waw.pl:2036

Source:

Journal of Telecommunications and Information Technology

Language:

ang

Rights Management:

Biblioteka Naukowa Instytutu Łączności

Subject and keywords:

BER peak-to-average power ratio multiple access interference crest factor MCCDMA zero-correlation zone

Object collections:

Last modified:

Apr 15, 2019

In our library since:

Oct 29, 2018

Number of object content hits:

70

All available object's versions:

https://bc.itl.waw.pl/publication/2320

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Edition name Date
Addad Mouad; Djebbari Ali, Suitable Spreading Sequences for Asynchronous MC-CDMA Systems, Journal of Telecommunications and Information Technology, 2018, nr 3 Apr 15, 2019

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