Báo cáo hóa học: " Research Article Adaptive Resource Allocation with Strict Delay Constraints in OFDMA System" ppt

... 2010, Article ID 121080, 14 pages doi:10.1155/2010/121080 Research Article Adaptive Resource Allocation with Strict Delay Constraints in OFDMA System Naveed Ul Hassan and Mohamad Assaad Department ... bound constraints) which help us to write the resource allocation problem. (ii) We write the adaptive resource allocation problem with strict delay cons...

Ngày tải lên: 21/06/2014, 11:20

... Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010, Article ID 314397, 11 pages doi:10.1155/2010/314397 Research Article Channel Resource Allocation ... existing EDCA modelling schemes are based on the Bianchi’s work [27], which introduces using the Markov chain to model DCF. In our previous work [25], we have developed a sim- plifi...

Ngày tải lên: 21/06/2014, 11:20

... P  i increases with increasing ζ i ;andforζ i >ζ (o) i , the power allocation is according to inversion in the channel SNR, that is, increasing ζ i decreases P  i . (2) The sensors with higher ... performance gain compared to a uniform power allocation scheme. 1. Introduction Wireless sensor networking is an emerging technology which finds application in many fields including e...

Ngày tải lên: 21/06/2014, 17:20

... optimization problem in (2) along with the con- straints in (3)–(6) is NP-hard. Moreover, there is a depen- dency between the constraints in (3)–(6). Using an adaptive scheme proposed in Section 5, ... possible. In this paper, we refer to them simply as “k parameters.” In brief, the proposed adaptive scheme makes the constraints independent resulting in a balanced traffi...

Ngày tải lên: 21/06/2014, 22:20

... effects of inaccuracy in the initial estimates resulting in a system outage quite clearly. It manifests as a dip in running time across all the workloads, which in some workloads results in a noticeable ... Networking Instead of having the constraint B i inside a maximization operator, we have only a linear combination of the utility analog A i and the constrained functions B i . The...

Ngày tải lên: 21/06/2014, 23:20

... Otherwise, equal resource allocation tends to approach the optimum resource allocation strategy, leading to diminishing CLO gains. 7. Conclusion Resource allocation with QoS constraints where multiple users ... more users with the same perceived quality, although in this case the gains diminish for increasing number of users. In line with the discussion in Section 6....

Ngày tải lên: 21/06/2014, 23:20

... 2.32 Hindawi Publishing Corporation Fixed Point Theory and Applications Volume 2010, Article ID 183596, 13 pages doi:10.1155/2010/183596 Research Article Fixed Point Theorems for ws-Compact Mappings ... > 0. Invoking Theorem 2.1, we infer that there exists y ∈ Q with rFyy. Let z  Fy,soFrzFrFy  Fyz.Thus,z ∈ B and B /  ∅. In addition, B is closed, since Fr is co...

Ngày tải lên: 21/06/2014, 11:20

... in macro blocks with low inter frame velocity. This framework deals only with minimizing perceptual distortion without considering the increase in bit rate. Our initial scheme in [16]embeds the ... data hiding in images: introduc- ing perceptual criteria into quantization based embedding,” in Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Proces...

Ngày tải lên: 22/06/2014, 00:20

... com- bining the output of five different expert classifiers trained using three different low-level features. In the system intro- duced in [12], several low-level image primitives were com- bined in ... concept building using the multifeature combination metric and using single descriptors. In order to prove that the multifeature combination met- ric performs better than any of the combi...

Ngày tải lên: 22/06/2014, 06:20

... pages doi:10.1155/2008/541478 Research Article Design and Performance of Cyclic Delay Diversity in UWB-OFDM Systems Poramate Tarasak, Khiam-Boon Png, Xiaoming Peng, and Francois Chin Institute for Infocomm Research, ... ξ eff . Following the approach in [12], we have to find the moment-generating function (MGF) and do inverse Laplace transform in order to obtain p ξ eff (x) and then...

Ngày tải lên: 22/06/2014, 06:20