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In this paper, an innovative scheduling scheme is proposed for interference-limited wireless multi-hop networks with non-deterministic fading channels. The scheduling problem is considered as a network utility maximization(NUM) problem subject to link rate constraints. With jointly considering link scheduling and the statistical variations of both signal and interference power, the convex sets for...
This paper proposes a novel iterative channel estimator for orthogonal wavelet packet modulation (OWPM) systems over frequency-selective fading channels. The channel estimation algorithm herein designed introduces linear interpolation to compensate the original value offered by expectation-maximization (EM) algorithm for iterative step. With the utilization of the coherence among both subcarriers...
In this paper, a new scheme for progressive image transmission over wavelet packet based orthogonal frequency division multiplexing (WP-OFDM) system is proposed. First, the BER performances of WP-OFDM systems with different Daubechies wavelet as orthogonal basis functions in multipath fading channel are investigated. The results show that there are error floors in the BER curves, so an equalization...
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