Partial Cross-Correlation of D-Sequences based CDMA System

TL;DR

This paper investigates the partial cross-correlation properties of d-sequences in CDMA systems, demonstrating that they have lower cross-correlation than PN sequences, which suggests their effectiveness for multiple access communication.

Contribution

It provides experimental analysis of partial cross-correlation of d-sequences, highlighting their potential advantages over PN sequences in practical CDMA systems.

Findings

Partial cross-correlation of d-sequences is lower than that of PN sequences.

D-sequences can be effective in CDMA due to their favorable correlation properties.

Experimental results support the use of d-sequences in multi-user communication systems.

Abstract

Like other pseudorandom sequences, decimal sequences may be used in designing a Code Division Multiple Access (CDMA) system. They appear to be ideally suited for this since the cross-correlation of d-sequences taken over the LCM of their periods is zero. But a practical system will not, in most likelihood, satisfy the condition that the number of chips per bit is equal to the LCM for all sequences that are assigned to different users. It is essential, therefore, to determine the partial cross-correlation properties of d-sequences. This paper has performed experiments on d-sequences and found that the partial cross-correlation is less than for PN sequences, indicating that d-sequences can be effective for use in CDMA.