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In this paper, we propose a predictive resource allocation algorithm for multicast downlink OFDM systems with imperfect channel state information (CSI). We assume that the CSI is fed back to the base station (BS) through a delayed channel. To avoid the system degradation caused by the outdated CSI, we present a channel prediction scheme at the user side, which takes the delay time into account. Then,...
We propose in this paper a practical adaptive modulation and channel encoding scheme for spatial multiplexing multiple-input multiple-output (MIMO) systems. The proposed scheme aims not only to maximize the average spectral efficiency (ASE) for a given bit error rate (BER) constraint but also to lower the computational and hardware complexity. First, an adaptive transmission principle for spatial...
Based on the result of Gupta and Kumar's seminal work, it has been proven that the scheme which allows multi-packet reception (MPR) can improve the throughput capacity by Theta(logn), while the improvement of network coding (NC) scheme is only upper bounded by a constant. On the development of NC, however, the most recently proposed schemes, physical- layer network coding (PNC) and analog network...
This paper presents two novel channel estimation algorithms for block transmission systems with two transmit antennas over frequency-selective fading channels: time-domain-processing-based algorithm (TDPBA) and frequency-domain-processing-based algorithm (FDPBA). Performance analysis of the two novel algorithms and simulation results show that both can achieve good channel estimation performance at...
We propose in this paper a channel estimation algorithm in MIMO-Single Carrier Frequency-Domain Equalization (MIMO-SCFDE) system over frequency-selective fading channels. In this algorithm the Pseudo-Noise (PN) sequences are employed as the pilots to estimate the Channel Impulse Responses (CIR). Performance analysis and simulation results of the algorithm show that it not only achieves better channel...
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