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