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A subspace blind channel estimation scheme is proposed for multicarrier(MC)-CDMA systems using multiple antennas. To obtain noise subspace that is essential for subspace blind channel estimation, frequency-domain over-sampling (FDO) is employed at the receiver side. A unique feature of this scheme is that it is applicable to general MC-CDMA systems without any constraint on the numbers of antennas...
In the OFDMA-based cellular relay networks, relay selection and resource allocation are the main problem to be solved. Many present works about resource allocation are for the goal of throughput maximization. In this paper, we propose an adaptive resources allocation algorithm joint relay selection, sub-carrier assignment and power allocation for the goal of energy saving to ensure users' QoS, and...
In this paper, we present a distributed resource allocation algorithm in cellular Orthogonal Frequency Division Multiple Access (OFDMA) system with multiple relays. Each frame is composed of two time-division sub-frames and each subframe involves multiple subchannels including several continuous subcarriers. The subchannels are divided into several blocks that are allocated to different relays adaptively...
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