Optimal Resource Allocation for Wireless Video over CDMA Networks
IEEE Transactions on Mobile Computing
IEEE Transactions on Mobile Computing
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 2
Optimal resource allocation for wireless video over CDMA networks
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 2
Enabling cognitive load-aware AR with rateless coding on a wearable network
Advances in Multimedia
Adaptive qos control for scalable video streaming over WLAN
PSIVT'06 Proceedings of the First Pacific Rim conference on Advances in Image and Video Technology
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Error control and power allocation for transmitting wireless video over CDMA networks are considered in conjunction with multiuser detection. We map a layered video bitstream to several CDMA fading channels and inject multiple source/parity layers into each of these channels at the transmitter. At the receiver, we employ a linear minimum mean-square error (MMSE) multiuser detector in the uplink and two types of blind linear MMSE detectors, i.e., the direct-matrix-inversion blind detector and the subspace blind detector, in the downlink, for demodulating the received data. For given constraints on the available bandwidth and transmit power, the transmitter determines the optimal power allocation among different CDMA fading channels and the optimal number of source and parity packets to send that offer the best video quality. We formulate a combined optimization problem and give the optimal joint rate and power allocation for each of these three receivers. Simulation results show a performance gain of up to 3.5 dB with joint optimization over with rate optimization only