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.This work is based on the research supported in part
by the National Research Foundation of South Africa
(Grant reference TP1207183332) and our industry partners
Telkom and Bytes Universal Systems.http://www.saiee.org.za/DirectoryDisplay/DirectoryCMSPages.aspx?name=Publications#id=1588&dirname=ARJ&dirid=337am2016Electrical, Electronic and Computer Engineerin
