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Supporting video transmission over wireless ad hoc networks is challenging due to instable topology and non-infrastructure architecture. Multiple description coding (MDC) is a source coding technique robust to topology changing for video streaming. Therefore, we propose a video transmission scheme over wireless ad hoc network in this paper. In the proposed scheme, we use MDC to generate several independent...
Bandwidth allocation for multi-user sharing heterogeneous wireless access networks is one of the most important problems in the next generation wireless networks. In this paper, we propose a bandwidth allocation scheme named as Efficient and Fair Rate Allocation (EFRA), which is formulated as a convex optimization problem maximizing the user's utility as well as determining to split the total rate...
In this paper, we propose a cross-layer model to provide reliable video stream transmission in the mobile environment. In the proposed model, the application-layer forward error correction (A-FEC) parameters at the application layer, the ARQ parameters at the data link layer and the adaptive modulation and coding parameters at the physical layer are jointly designed. By maximizing the number of correctly...
To provide reliable video stream transmission over wireless networks, we propose a cross-layer design model in this paper. In the proposed model, the adaptive modulation and coding parameters at the physical layer, the ARQ parameters at the data link layer and the application-layer forward error correction (A-FEC) parameters at the application layer are jointly designed. Our objective is to maximize...
This paper proposes an adaptive stream reliability modeling technique for audio visual speech recognition (AVSR). As recognition conditions vary locally, we present two local measures - frame and window dispersions to depict the temporal discriminative powers and noise levels of both audio and visual streams. The dispersions are subsequently mapped to stream exponents according to the minimum classification...
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