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In this paper we propose three frequency reuse coordination schemes for interference management in OFDMA. The aim of these schemes, working together with time and frequency domain packet scheduling, is to achieve reuse of 1 at sector level in a trisectorized base station scenario. Inter-sector interference is strong at the frontier between sectors and a tight coordination scheme needs be applied....
In this paper we have investigated the optimum power allocation in a random access wireless orthogonal frequency division multiple access (OFDMA) communication system with multiple source and multiple destination nodes. The multiple sources in the system each transmitted information to multiple destinations and cooperated via an orthogonal regenerative decode and forward protocol with different frequency...
In this paper we investigate the optimum power allocation in a random access wireless orthogonal frequency division multiple access (OFDMA) communication system with multiple source and multiple destination nodes. The multiple sources in the system each transmits information to multiple destinations at a fixed signal to noise ratio (SNR) target and cooperates via an orthogonal amplify and forward...
Spectrum sharing employs dynamic allocation of frequency resources for a more efficient use of the radio spectrum. Despite its appealing features, this technology inevitably complicates the synchronization task, which must be accomplished in an environment that may involve interference. This paper considers the uplink of an orthogonal frequency-division multiple-access (OFDMA)-based spectrum sharing...
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