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In this paper, the performance of universal-filtered multi-carrier (UFMC) system is analyzed. Specifically, the UFMC signals are generated with Dolph-Chebyshev, Hamming and Hanning filtering. The characteristics of UFMC signals are also compared with OFDM signal, in both software and hardware-in-the-loop simulations. Experimental results show that UFMC signals have better performance than OFDM signal,...
In this paper, a novel scheme of the weighted distortion-to-signal ratio (WDSR) based partial transmit sequence (PTS) is proposed to enhance the bit error rate (BER) performance in nonlinear distorted orthogonal frequency-division multiplexing (OFDM) systems, and its key idea is to employ the WDSR metric to predict the nonlinear distortion caused by high power amplifier (HPA). Furthermore, several...
OFDM has become the main basic transmission technology replacing single carrier spread spectrum techniques in the new generation broadband wireless communication, spectrum detecting of OFDM signals has developed rapidly in the field of Cognitive radio. In the OFDM system, there is a great correlation between CP and OFDM symbols which are introduced for eliminating ISI, so the detection methods based...
Cognitive radio technology is originated from the spectrum holes in TV-band. With the development of digital TV services, spectrum detection is more and more aiming at cognitive radio system which makes digital television system as the primary user. It has the characteristics of cyclic prefix in OFDM technology, so using correlation detection will greatly improve the performance of spectrum detection...
In this paper, a simple and effective synchronization scheme for NC-OFDM systems is proposed. To keep the autocorrelation in the scenario of subcarriers deficiency, the preamble is consists of two identical pseudo-noise (PN) sequences instead of ZC sequences. Coarse timing estimation and fractional CFO(carrier frequency offset) estimation are completed according to the correlation between the received...
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