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— While fast variations of wireless channel characteristics cause intercarrier interference (ICI) in orthogonal frequency-division multiplexing systems, they also introduce frequency diversity, which can be exploited to improve the demodulation performance. An ICI-reduction algorithm is proposed based on a sphere decoding (SD) algorithm. By considering… (More)
— A low-complexity iterative algorithm is proposed for intercarrier-interference reduction in orthogonal frequency-division mul-tiplexing systems. Design examples are presented which demonstrate that the proposed algorithm outperforms several existing algorithms in terms of bit-error-rate performance and computational complexity.
— New peak-to-average power-ratio reduction (PAPR) algorithms for orthogonal frequency-division multiplexing systems are investigated in a probabilistic framework. Specifically, two de-randomization algorithms for PAPR reduction are developed by applying the so-called conditional probability method. Our simulations demonstrate that the proposed algorithms… (More)