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Cognitive Radio (CR) is proposed as a promising means to utilize the spectrum more efficiently. However, in cognitive radio system, how to achieve the users' QoS requirements is a challenge. To solve this problem, cooperative relay transmission has been proposed as a powerful approach. In the relay-assisted CR system, users can not only obtain required service directly from the Cognitive Base Station...
In this paper, we present an enhanced EDSVQ method namely EEDSVQ to quantize the differential LSFs. The EEDSVQ method can prevent the quantization error propagation efficiently. According to the intra-frame correlation coefficients of differential LSFs, we propose an optimal partition scheme for EEDSVQ method. The simulation results show the EEDSVQ method with (4,6) division has the best quantization...
It is a challenging task that enables performance isolation while providing performance guarantees among applications that share storage infrastructure. This paper presents admission-control-based proportional allocation (APA), a novel I/O request scheduler that combines the admission control of worst-case resources reserved with the proportional resources allocation to manage the bandwidth resources...
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