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Breakthrough progresses had been achieved in high-rate visible light communications for the past several years, which employed advanced material LEDs and were processed off-line, but only in a short transmission range. It is an incentive to exploit a real-time visible light communication system with a long transmission range over a high-power commercial LED. This paper proposes the methods from baseband...
This paper proposes an efficient downlink resource allocation scheme for Orthogonal Frequency Division Multiple Access based WiMAX systems using the Adaptive Modulation and Coding mode operation. Given a set of user requests, the proposed algorithm determines the modulation scheme and allocates a two-dimensional (time and frequency) burst to each user. It is known that finding the optimal solution...
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