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In this paper, N-continuous (NC) precoding is first combined with spatial modulation (SM) - orthogonal frequency division multiplexing (OFDM) system for sidelobe suppression, and the bit-error rate (BER) performance of the considered system is analyzed over fading channels. On the one hand, the introduced interference of the NC precoder is modeled and analyzed for SM-OFDM, so as to achieve the theoretical...
In this paper, we present an improved iterative interchannel interference (ICI) cancellation and signal detection technique for orthogonal frequency division multiplexing (OFDM) system on fast time-varying fading channel with nonintegral-delay. As a consequence of the time-varying channel, the orthogonality of subcarriers is destroyed, resulting in interchannel interference (ICI), which increases...
The existed preamble structure for orthogonal frequency division multiplex/offset QAM (OFDM/OQAM) system requires two zero-value guard symbols to guarantee ISI and ICI avoidance (equivalent to 3/2 complex value symbols in OFDM with cyclic prefix system), which leads to OFDM/OQAM system with low spectrum efficiency. In this paper, we shorten the preamble with 1 zero-value guard symbol to improve the...
This paper presents a performance analysis of vector orthogonal frequency division multiplexing (VOFDM) in multipath fading channel to investigate its diversity gain, performance limitation and the choice of dimension in the vector block for the design of a low-complexity receiver. Based on the analytically derivation, it is first verified that VOFDM can realize the maximum diversity gain while the...
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