Báo cáo hóa học: "Research Article Efficient Vector-Based Forwarding for Underwater Sensor Networks" ppt

... this area still remains open for future research in WSNs. For instance, a forwarding ap- proach that exploits the use of directional antennas is pro- posed in [13] for WSNs. It tr ies maximizing ... Wireless Communications and Networking Volume 2007, Article ID 37910, 9 pages doi:10.1155/2007/37910 Research Article Efficient MAC Protocols for Wireless Sensor Networks Endowed...

Ngày tải lên: 22/06/2014, 19:20

... which is depicted in Figure 8. Form Figure 8 we observe that the appr.I inference has a much higher KL divergence, averaging at 0.3933 for forward pass and 1.1727 for backward, than that of the ... appr.II inference, averaging at 0.0127 for forward pass and 0.0129 for backward. Moreover, the KL divergence of appr.I inference has much more spikes than that of appr.II, both in forward a...

Ngày tải lên: 21/06/2014, 05:20

... Notation. h() Use for the one-way hash function of key generation a j , a j−1 Two parameters for generation of key pre-deployed in the jth sensor node msg finish Message for the cluster node informing sensor node ... introduced below. (1) Sensor module: the sensor module is responsible for sensing an analog signal. The signal transformation component transforms the analog signa...

Ngày tải lên: 21/06/2014, 23:20

... for network planning or for coarse studies to understand the interrelations of new features, for example, heterogeneous networks [12]. In this work we will present the theoretical framework for ... Wireless Communications and Networking Volume 2010, Article ID 282465, 15 pages doi:10.1155/2010/282465 Research Article Efficient Uplink Modeling for Dynamic System-Level Simulation...

Ngày tải lên: 21/06/2014, 11:20

... rate information to the previous information contained in the Bit Map. In this case, since an ACK will not be sent, the sender also changes the current data rate information to the previous information ... Wireless Communications and Networking Volume 2010, Article ID 264838, 9 pages doi:10.1155/2010/264838 Research Article Efficient MAC Protocol for Subcarrier-Wise Rate Adaptation ove...

Ngày tải lên: 21/06/2014, 17:20

... modified version of PU 2 RC for multiple antenna users, zero-forcing beamforming (ZF-BF) using channel vector quantization (CVQ) [18, 37, 38], spatial multiplex- ing with zero-forcing receiver processing, ... partial side information,” IEEE Transactions on Information Theory, vol. 51, no. 2, pp. 506–522, 2005. [35] M. Sharif and B. Hassibi, “A comparison of time-sharing, DPC, and beamforming...

Ngày tải lên: 21/06/2014, 17:20

... optimize N k and x k , k = 1, , K,fora specific wireless sensor network. Remark 1. In this section, we have dealt with energy and quantization optimization for multiple sensors that are co- operating ... in Signal Processing Volume 2008, Article ID 462930, 12 pages doi:10.1155/2008/462930 Research Article Energy-Constrained Optimal Quantization for Wireless Sensor Networks Xiliang...

Ngày tải lên: 22/06/2014, 19:20

... Advances in Signal Processing Volume 2011, Article ID 646134, 8 pages doi:10.1155/2011/646134 Research Article Efficient Dispersion Generation Structures for Spring Reverb Emulation Julian Parker Department ... filters, and, therefore, are ignored for the purpose of this work. 3. Efficient Dispersion Generating Structures 3.1. Chirp Straightening. In this section we describe a method...

Ngày tải lên: 21/06/2014, 05:20

... [tarighat], [schenck] No IQ imbalance compensation (b) BER versus SNR for receiver IQ imbalance Figure 6: Performance results for 16QAM OFDM system with frequency independent amplitude imbalance ... SNR performance for a system impaired with transmitter and receiver IQ imbalance. It can be seen that the proposed predistortion-based D-FEQ compensation scheme is still very robust and the...

Ngày tải lên: 21/06/2014, 08:20

... therefore, it requires high CPU and memory capabilities to p erform exponential operations. Unfortunately, mobile nodes with limited resources have insufficient power to handle the overhead. Therefore, ... and Networking Volume 2011, Article ID 382701, 15 pages doi:10.1155/2011/382701 Research Article Efficient Key Agreements in Dynamic Multicast Height Balanced Tree for Secure Multicast...

Ngày tải lên: 21/06/2014, 11:20