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Power-line communications, conceived as an enabling technology for data networking alternative, is known to be susceptible to impulsive noises to attain assured transmission rate. To combat this obstacle, we design an efficient decoding scheme to incorporate erasures into the Viterbi algorithm. A unique feature of the decoding scheme is that it does not need the detailed knowledge of impulse statistics...
In digital and wireless communication systems, a sequence with special pattern is used as synchronization sequence. The synchronization is equivalent to making a phase offset between a receiving synchronization sequence and its receiver stored replica be identical. In this paper we present an efficient synchronization algorithm which can be used for binary sequences. The proposed synchronization scheme...
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 this paper, we discuss a multiuser multiple-input multiple-output (MIMO) relay system with direct link based on ordered Tomlinson-Harashima precoding (THP). THP with fairness-guaranteed power loading is applied with both zero-forcing (ZF) and minimum mean square error (MMSE) criteria. The direct and relay links are combined to obtain the diversity gain. The maximum ratio combining (MRC) weights...
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...
With the development of high-speed railway all over the world, the reliability and communication of bullet train depends on the wireless communication between train and Base Stations (BSs) along the railroad. Traditional handover scheme of Long Term Evolution (LTE) network is that ‘neighboring cell becomes better than an offset relative to the serving cell’ during Time To Trigger (TTT), it avoids...
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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