Báo cáo hóa học: " Research Article Optimal Channel Width Adaptation, Logical Topology Design, and Routing in Wireless Mesh Networks" potx

... the links in E physical links and the links in E  logical links. The logical link (n p , m q ) will exist in the final logical topology after spectrum allocation if and only if the pth interface ... Kyasanur and N. H. Vaidya, Routing and interface assign- ment in multi -channel multi-interface wireless networks,” in Proceedings of the IEEE Wireless Communicatio...

Ngày tải lên: 21/06/2014, 23:20

... add their link costs to A Sink to form C B-Sink , C D-Sink , and C J-Sink ,respectively.NodesB, D,andJ store these information in their routing tables, as shown in Tabl e 1.After a certain period ... Kim, Y. Doh, and S. Yoo, “Power aware chain routing protocol for continuous data dissemination in wireless sensor networks,” in Proceedings of the 1st Interna- tional Conference...

Ngày tải lên: 21/06/2014, 23:20

... winning probabilities of different slot machines could be different and they are initially unknown to the bandit. He can only learn about them by trying different machines and estimating their winning probabilities. ... transmitted during that time as shown in Figure 6. Since in practical scenarios the interference probability q i  1, the probability of having two interfering packets ar...

Ngày tải lên: 21/06/2014, 22:20

... multiuser downlink channel is also called broadcast channel (BC) in information theory literature [40]. Assuming that the same channel is used on the uplink and downlink, the aggregate uplink channel ... are determined employing the uplink-downlink duality idea in MIMO BC under per- antenna power constraint introduced in [21 , 22]. The remainder of this paper is organized as f...

Ngày tải lên: 21/06/2014, 05:20

... exten- sion would a llow more modeling other than tree-based routing protocols. Future work also includes examining new reservation policies and researching optimal switching points between the presented ... in Channel Access MAC protocol can be divided into channel access and networking mechanisms. The channel access mechanism defines radio utilization for maintaining synchron...

Ngày tải lên: 21/06/2014, 11:20

... sacrifice in bandwidth efficiency, if the channel codes are specifically designed for multiple transmit antennas. Space- time coding is a bandwidth and power efficient method of communication over fading channels. ... four-state super-orthogonal block coding schemes in both FS and FNS fading channels when both OFDM and ME are employed for the FS fading channel scenario. From Figures 6...

Ngày tải lên: 21/06/2014, 17:20

... fly: data-driven link estimation and routing in sensor network backbones,” in Proceedings of the 25th IEEE Annual Joint Con- ference of the IEEE Computer and Communications Societies (INFOCOM ’06), ... processing and retransmission of the overheard information at thosestations surrounding the source and the destination. By combining different versions of the same information trans...

Ngày tải lên: 21/06/2014, 20:20

... in fading channels where the link gains vary over time, unless all the instantaneous link gains are frequently measured and made available to the scheduler, resulting in much added overhead and ... communication and coordination in embedded sensor networks,” Proceedings of the IEEE,vol.91,no.7,pp. 1002–1022, 2003. [8] S. Gandham, M. Dawande, and R. Prakash, “Link scheduling in...

Ngày tải lên: 21/06/2014, 22:20

... performance, and the optimal number for n is investigated in the following experiments. 2.3.2. Introduction of dissimilarity measure for finding feature vector changing points In this section, we introduce ... starting and ending parts in a music piece are often unique and are not repeated within the music piece. As a result, the histogram depicted in Figure 3 is not generated...

Ngày tải lên: 22/06/2014, 00:20

... pages doi:10.1155/2007/35262 Research Article Multimedia Encryption with Joint Randomized Entropy Coding and Rotation in Partitioned Bitstream Dahua Xie and C C. Jay Kuo Ming Hsieh Department of Electrical Engineering and ... estimation in an adaptive QM coder is determined by an internal state machine and changes according to the state and current input. (ii) The second typ...

Ngày tải lên: 22/06/2014, 06:20