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Herein, we propose a distributed channel allocation scheme for power distribution wireless communication systems in smart grid. By defining the priority for each user equipment(UE), the wireless channels are allocated for each interrupted UE efficiently. Since the UEs obtain their priorities based on the local information, the proposed channel allocation scheme is scalable, and therefore suitable...
System performance of cellular networks could be improved by D2D communication. A retransmission scheme within D2D group is proposed for the case of data sharing. When all the D2D UEs failed to get data packet from BS by cellular links, retransmission is still carried out within the group. Because of the enhancement of receiving SNR, a UE could decode the data with a higher probability. Analysis and...
Multicast service is a key function of the next generation broadband mobile system. The performance of wireless multicasting is severely degraded due to the wireless channel fading. Multiple antennas and cooperative communication are promising techniques that can be used to improve the multicast performance. Most cooperative schemes are based on the decode-and-forward (DF) strategy that requires the...
We consider relay selection technique in a cooperative cellular network where user terminals act as mobile relays to help the communications between base station (BS) and mobile station (MS). A novel relay selection scheme, called Joint Uplink and Downlink Relay Selection (JUDRS), is proposed in this paper. Specifically, we generalize JUDRS in two key aspects: (i) relay is selected jointly for uplink...
The paper proposes the scheduling method to not only implement the proportional fairness between terminal users but also improve spectral efficiency by enabling concurrent transmission (CT) in wireless multi-hop OFDMA networks. The overhead reduction of channel quality information (CQI) is presented in coupling with the proposed scheduling and hereafter its performance with the reduced CQI is discussed...
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