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The bit error rate (BER) performance of various spreading sequences in a synchronous multicarrier code-division multiple access (MC-CDMA) system is compared by numerical simulations in this paper. The underlying subcarriers are correlated. Gold, orthogonal Gold, 4-phase family A, Walsh-Hadamard (WH) and new orthogonal unified complex Hadamard transform (UCHT) sequences are investigated here. Simulation...
The performance of a direct-sequence code division multiple access (DS-CDMA) system is largely dependent on the correlation properties of the spreading sequences in use. Given a set of sequences, it is thus important to select an appropriate subset for optimal performance. In this paper, two new selection criteria of sequence subsets are given for synchronous and asynchronous DS-CDMA systems over...
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