De Figueiredo, NikolaiLinde, Louis P.Van Wyk, Jacques Herman2016-07-052016-07-052015-12De 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. 195-200.1991-1696http://hdl.handle.net/2263/53631This 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.en© 2015 South African Institute of Electrical EngineersSTF-CDMA-OFDMDiversityMulti-user-interference (MUI) freeMultiple-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)Article