Abstract
Complete complementary codes (CCC) refer to a set of two-dimensional matrices, which have zero non-trivial aperiodic auto- and cross- correlation sums. A modern application of CCC is in interference-free multicarrier code-division multiple-access (MC-CDMA) communications. In this paper, we first show that in asynchronous "fractional-delay" uplink channels, CCC-MC-CDMA systems suffer from orthogonality loss, which may lead to huge interference increase when a conventional correlator based receiver is deployed. Then, by exploiting the correlation properties of CCC, we present a fractional-delay-resilient receiver which is comprised of a chip-spaced correlating array. Analysis and simulations validate the interference-free achievability of the proposed CSCA receiver in strong interference scenarios.
| Original language | English |
|---|---|
| Article number | 6937211 |
| Pages (from-to) | 1226-1236 |
| Number of pages | 11 |
| Journal | IEEE Transactions on Wireless Communications |
| Volume | 14 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Mar 2015 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2014 IEEE.
ASJC Scopus Subject Areas
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics
Keywords
- Complete Complementary Codes (CCC)
- Fractional-Delay-Resilient
- Interference-Free Performance
- Multi- Carrier CDMA (MC-CDMA)