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Multichannel sensing scheduling and interference avoidance are two major challenges for medium access in Cognitive Radio Networks (CRN). In this paper, we propose an adaptive sensing cycle scheme for scheduling multichannel sensing with interference avoidance in CRN. The principle of the proposed adaptive sensing cycle scheme is to prioritize the multichannel sensing and access based on interference...
We introduce an opportunistic interference mitigation (OIM) protocol for cellular networks, where a user scheduling strategy is utilized in uplink K-cell environments with time-invariant channel coefficients and base stations (BSs) having M receive antennas. In the OIM scheme, each BS opportunistically selects a set of users who generate the minimum interference to the other BSs. We consider two OIM...
Generally, optimization techniques for resource allocation of orthogonal frequency-division multiple-access (OFDMA) systems are infeasible for real-time applications. In this paper, with consideration of grouping for subscriber stations (SSs), a resource-allocation scheme by an optimization technique of a genetic algorithm is proposed for the uplinks of IEEE 802.16 OFDMA systems. The genetic algorithm...
Cognitive radio networks offer the promise of adaptively allocating resources on the fly. In this paper, we describe an interference mitigation technique that relies on intelligent resource allocation across a mesh network. In previous work, we presented a method for improving the performance of wireless mesh networks (WMN) through the use of multichannel wormhole switching. An approximate 800-fold...
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