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In this article, we propose a resource allocation algorithm for orthogonal frequency division multiplexing-based cellular system that serves users each of which requests a regular service or a multimedia broadcast multicast service (MBMS). We assume that the MBMSs are considered for video services such as mobile TV. In order to efficiently serve the users with heterogeneous channel conditions, we...
This paper proposes a resource allocation algorithm for multicasting video streams to users with diverse screen sizes. In order to gain from multicasting, quality of the channel has to be sufficiently high for the all users, and probability that such channel happens become lower as the number of the users grows. Therefore, this paper considers orthogonal frequency division multiple access (OFDMA)...
This paper proposes multiuser orthogonal frequency division multiplexing system for compressed video packets. Normally, video coding technologies compress video contents by removing similarities inherent in the video contents, so that it causes dependencies among the packets. It eventually results in inequality in terms of influence on video distortion, so that unequal protection is required to achieve...
Orthogonal frequency division multiplexing provides frequency diversity gain when assuming frequency selective channel which happens in most cases of wireless mobile communications. The frequency diversity can be utilized by considering data which requires unequal protection. Video data coded by scalable video coding method is an example. The video coding method encodes a certain picture period termed...
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