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Large Families of Ternary Sequences with Aperiodic Zero Correlation Zones for a MC-DS-CDMA System
| Citations: | 3 - 0 self |
BibTeX
@MISC{Donelan_largefamilies,
author = {H. Donelan and T. O'Farrell},
title = {Large Families of Ternary Sequences with Aperiodic Zero Correlation Zones for a MC-DS-CDMA System},
year = {}
}
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Abstract
A new method for generating families of ternary spreading sequences is presented. The sequences have aperiodic zero correlation zones and large families are created for a specific sequence length. The sequences are proposed as spreading sequences to provide high capacity and cancel multipath and multiple access interference (MAI) in a single carder (SC) or multi-carder (MC) direct-spread code division multiple access (DS-CDMA) system. A Multicarder DS-CDMA system is simulated that employs the new sequences as spreading sequences in a multipath channel. Bit error rates (BER) and frame error rates (FER) for a range of Eb/No values are presented and it is demonstrated that the proposed sequences improve the BER and FER performance when used in place of masked Walsh Codes for the frequency selective fading channel evaluated, when a single correlator receiver is used on each sub-carder.
Keyphrases
large family aperiodic zero correlation zone mc-ds-cdma system ternary sequence single carder new method bit error rate high capacity multicarder ds-cdma system frequency selective fading channel frame error rate correlation zone fer performance eb value multipath channel single correlator receiver multiple access interference direct-spread code division multiple access specific sequence length masked walsh code ternary spreading sequence new sequence
