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This paper investigated the admission control problem in multi-service cellular relay system with orthogonal frequency division multiplexing access (OFDMA). Subjected to a hard constraint on the quality-of-service (QoS) requirements and the capability of relay, the admission problem could be described as the problem of maximizing the amount of subcarriers saved by relaying transmission. With further...
In this paper, we investigate the problem of radio resource allocation with fairness constraints in distributed wireless communication systems (DWCS), based on orthogonal frequency division multiplexing access (OFDMA) technology. Two kinds of scenario are considered including the optional antenna system (OAS) and the fix-area antenna system (FAS). The graph theoretical approaches are proposed for...
This paper investigates the radio resource allocation for the OFDMA systems. Two kinds of share auction mechanism are proposed, where the base station possesses of the subcarriers and plays as auctioneer, while the users play as bidders completing for them. These two kinds of auction are designed as first-price seal-bid, in which, the SINR auction aims at the desire for high throughput, and the fairness...
In this paper, the multi-group frequency hopping OFDMA (MG-FH OFDMA) based on the statistical multiplexing is proposed for the downlink cellular system. Compared with the existed random frequency hopping OFDMA (RFH-OFDMA) system utilizing the statistical multiplexing, the proposed MG-FH OFDMA invokes the deterministic hopping pattern to reduce the number of subcarrier collisions. By dividing all users...
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