báo cáo hóa học:" Research Article Rate Control Performance under End-User’s Perspective: A Test Tool" pptx

... Computer Performance Evaluation, pp. 255–272, Urbana, Ill, USA, 2003. [20] O. A. Lotfallah, M. Reisslein, and S. Panchanathan, A framework for advanced video traces: evaluating visual quality for ... tool may aid rate controller designers to test their strategies regarding performance aspects hard to evaluate by simulation (e.g., control overhead, frame rate at the clients, qual...

Ngày tải lên: 21/06/2014, 18:20

... data is transmitted on forward link, the information for estimating available bandwidth should be provided by the forward rate of data packets. TCP New Jersey [28] proposed timestamp-based available ... jitter ratio in JSCTP, we should validate parameter settings of jitter ratio and k/w ratio to choose a suitable one for improving better performance. Bad value of parameters may raise the...

Ngày tải lên: 21/06/2014, 05:20

... Complete Sharing admission policy, that is, all SU requests are accepted while free resources are available, deploying a random channel alloca- tion scheme with no repacking. APUarrivalinstatex will ... consider an infrastructure-based DSA network where PUs and SUs cooperate. Infrastructure-based DSA networks have been proposed in [2, 6, 15]. We assume that channels available for system ope...

Ngày tải lên: 21/06/2014, 17:20

... the bit -rate a ects the performance of the beamformer. This paper investigates the relation between the transmission bit- rate and beamformer performance. In the absence of bit -rate constraints, a ... transmitted. At infinite bit -rate, G lp raw (R) is lower than G raw (R), but such a scheme allows a trade-off between bit -rate and performance. 5. Conclusions In a wireless...

Ngày tải lên: 21/06/2014, 20:20

... coefficients in each subband are coded using SPIHT algorithm [8] in a blockwise basis. In [9], Anantrasirichai et al. achieved a spatial scalability of image views via in-band disparity estimation and compensation with ... Distortion Analysis and Bit Allocation Scheme for Wavelet Lifting-Based Multiview Image Coding Pongsak Lasang 1 and Wuttipong Kumwilaisak 2 1 Media Processing Group, Pana...

Ngày tải lên: 21/06/2014, 20:20

... pages doi:10.1155/2009/632545 Research Article Rate- Distortion Optimization for Stereoscopic Video Streaming with Unequal Error Protection A. Serdar Tan, 1 Anil Aksay, 2 Gozde Bozdagi Akar, 2 and Erdal Arikan 1 1 Department ... mechanism that aims to calculate optimal redundancy injection rate into the network, while adapting the video bit rate accordingly in order to match the ava...

Ngày tải lên: 21/06/2014, 22:20

... the Lagrange parameters μ s and μ r . It may happen (and has been encountered for some of the channels randomly generated) that the optimal values of these Lagrange parameters are such that the ... may be different. For instance, it may even happen that all carriers are allocated to the set S s in which case the relay does not transmit at all. One way to take this particular case into account...

Ngày tải lên: 21/06/2014, 22:20

... 30 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 Pre-adaptation SNR (dB) S(γ)/S bar C OPRA MASA 4×∞ MASA 4×4 Figure 4: Power adaptation schemes for MASA 4×∞ and MASA 4×4 as a function of preadaptation SNR, plotted for an average preadapta- tion ... an average transmit power constraint, the channel capacity of a Rayleigh fading channel with optimal continuous -rate adaptation and con- stant trans...

Ngày tải lên: 22/06/2014, 00:20

... the values of G ij ’s. This assumption is necessary and widely adopted in the literature to enable an analytical evaluation of the achievable system capacity. For example, in capacity planning ... provides a similar overall rate to that of the rate- maximizing scheme. In [7], they provided achievable rate formulations from the physical layer perspec- tive and studied algorithms using t...

Ngày tải lên: 22/06/2014, 00:20