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systems. It has been shown that the complexity of the traditional SLM scheme can be substantially reduced by adopting the conversion vectors to replace the inverse fast Fourier transform (IFFT) operations [4]. Each conversion vector is obtained by taking the IFFT of the phase rotation vector. Unfortunately, the corresponding phase rotation vectors of the(More)
—A Gaussian integer is a complex number whose real and imaginary parts are both integers. In addition, a sequence is defined to be perfect if and only if the out-of-phase value of the periodic autocorrelation function (PACF) equals zero. This paper commences by presenting a novel class of perfect sequences. The investigated perfect sequences are generated(More)
—The cell search procedure of the third generation partnership project long term evolution (3GPP LTE) includes the time synchronization, the frequency synchronization of frames, and the acquisition of cell identity (Cell ID). The traditional cell search scheme detects the Cell ID by computing the correlation between the received signal and all transmitted(More)
—Multi-carrier code division multiple access (MC-CDMA) systems experience serious multiple access interference in uplink transmission since the orthogonality among codes is destroyed by the frequency-selective fading channels. The comb-spectrum (CS) CDMA system was proposed to overcome this drawback by orthogonally assigning subcarriers to various users.(More)