Space-time precoded CDMA-OFDMA employing super-orthogonal complete complementary codes

Loading...
Thumbnail Image

Authors

De Figueiredo, Nikolai
Linde, Louis P.
Van Wyk, Jacques Herman

Journal Title

Journal ISSN

Volume Title

Publisher

South African Institute of Electrical Engineers

Abstract

This paper addresses and illustrates, both analytically as well as by means of simulation, the equivalence of a cyclically rotated complete complementary coded (CRCCC) code division multiple access orthogonal frequency division multiplexed (CDMA-OFDM) BPSK/QPSK system and a narrowband uncoded BPSK/QPSK reference system. The equivalence can be attributed to the MUI-free characteristic performance of CRCCCs. It is demonstrated that when employed in a multiple-input multiple-output (MIMO) antenna configuration along with orthogonal space-time block codes (OSTBCs), the maximum theoretical diversity order of NTxNRx is achieved. Most significantly, simulations show that CDMA-OFDM using CRCCCs is capable of rendering additional multipath diversity gain at no additional processing cost. This signifies improved performance when compared with conventional ST-OFDM systems.

Description

Keywords

STF-CDMA-OFDM, Diversity, Multi-user-interference (MUI) free, Multiple-access (MA), Cyclically rotated complete complementary coded (CRCCC), Orthogonal space-time block codes (OSTBCs), Code division multiple access (CDMA), Space-time-frequency (STF), Orthogonal frequency division multiple access (OFDMA)

Sustainable Development Goals

Citation

De Figueiredo, N, Linde, LP & Van Wyk, JH 2015, 'Space-time precoded CDMA-OFDMA employing super-orthogonal complete complementary codes', SAIEE Africa Research Journal, vol. 106, no. 4, pp. 195-200.