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Relay system attracts increasing research attention for Multihop Wireless Network, and then RSs location is a vital optimization variable to richly exploit the advantages of adopting RSs. In this paper, we aim to resolve the optimal location of RSs in a two-hop network to maximize system capacity. We first derived a tight close-form approximation of ergodic capacity and outage probability over the...
Relay stations (RSs) can enhance signal quality for mobile stations (MSs) close to the cell boundary. To abundantly exploit the advantages of RSs, it is a critical task to investigate the impact of RSs location on link reliability and system capacity in two-hop cellular networks. In this paper, the closed-form of the number of disconnect MSs and the expression of system capacity for varying RSs location...
In this paper, a novel dynamic full frequency reuse scheme is proposed to improve the spectral efficiency in orthogonal frequency division multiple access (OFDMA) cellular relay networks. Different from the conventional full frequency reuse scheme which only allows the base station (BS) reusing the subcarriers in the specific regions, we proposed an improved full frequency reuse scheme to allow the...
This paper researches the utility-based resource allocation problem in a real-time and non-real-time traffics mixed OFDMA cellular relay network to exploit the potentiality of relay. In order to apply utility theory to obtain an efficient tradeoff between throughput and fairness as well as satisfy the delay requirements of real-time traffic, a joint routing and scheduling scheme is proposed to resolve...
Real-time and fairness assisted scheduling schemes in two-way relay network with multiuser and single relay are studied. In the discussed model, the relay can only serve one pair of users at a moment. Since different users not only have different requirements on rate and traffic amount, but also contain different traffic type such as real-time and non-real-time traffic, user-pairs should be served...
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