Báo cáo hóa học: " Research Article Employing Coordinated Transmit and Receive Beamforming in Clustering Double-Directional Radio Channel" doc

... pages doi:10.1155/2007/57175 Research Article Employing Coordinated Transmit and Receive Beamforming in Clustering Double-Directional Radio Channel Chen Sun, 1 Makoto Taromaru, 1 and Takashi Ohira 2 1 ATR Wave Engineering Laboratories, ... model of employing directional antennas at both ends of the wireless link in a clustering DDRC. the presence of angular dis...

Ngày tải lên: 22/06/2014, 19:20

... the main instrument in our design procedure that clearly puts into evidence the main elements involved in the proposed algorithm. Using this method, we can map the proposed VLSI algorithm into ... length L and the implementation style for ROM and adders. In order to implement (13) and to obtain the output sequence in the natural order a postprocessing stage has to be included as...

Ngày tải lên: 21/06/2014, 07:20

... ω 2 ) = 1  √ 2πσ  M/2 e −(1/2σ 2 )x 2 −a 2 s 2  2 . (A.2) Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2010, Article ID 172703, 13 pages doi:10.1155/2010/172703 Research Article Robust Blind Frequency and ... on Advances in Signal Processing 13 [9] H. Fan, Y. Guo, and X. Feng, “Blind parameter estimation of frequency hopping signals...

Ngày tải lên: 21/06/2014, 08:20

... Kamble and Ghose incorporated block buffering, data RAM subbanking, and bus invert coding for evaluating the models. The relative error in the models increased greatly when the sub-banking and block ... range of inputs like number of bit switches on address bus per instruction, number of bit switches on data bus per instruction, number of memory cells in a word line and in a bit...

Ngày tải lên: 21/06/2014, 20:20

... in Signal Processing Spectrum sensor Band 1 Band 2 Band 3 Band 4 Primary user Figure 1: Illustrating spectrum sensing over multiple frequency channels. In this paper, we target at finding an intelligent ... in channel m, t m is the time slot of detecting the primary user and stopping transmitting over channel m,andc is a constant scalar balancing the weights of false alarm and detect...

Ngày tải lên: 21/06/2014, 20:20

... the original problem (with integer constraints) is obtained by means of employing rounding algorithms. However, in the WiMAX scenario and taking into account that an allocation is kept during several ... performing subcarrier and power allocation. The authors in [6]analyze how concurrent transmissions boost performance in mesh type networks by proposing an interference-aware routi...

Ngày tải lên: 21/06/2014, 22:20

... relaying in comparison to single- path relaying. This is of course at the cost of additional sig- naling and control overhead. Nonetheless, the coordinated and joint transmission of BSs and RSs ... Universal-Networking Information Infrastructure (U-NII, 5.15–5.35 GHz) band and the upper Industry Science and Medical (ISM, 5.725–5.825) band. 6 EURASIP Journal on Wireless Communica...

Ngày tải lên: 21/06/2014, 23:20

... pages doi:10.1155/2007/65058 Research Article Maximum Likelihood Timing and Carrier Synchronization in Burst-Mode Satellite Transmissions Michele Morelli and Antonio A. D’Amico Department of Information Engineering, ... the timing estimates, E {(ε − ε) 2 }, as obtained with MLE and O&M. The observation length is N = 32 in Figure 6 and N = 64 in Figure 7. Marks indicate...

Ngày tải lên: 22/06/2014, 19:20

... between 00.20.40.60.811.21.41.6 Distance −20 −10 0 10 20 30 40 C/I (dB) 1 interfering cell 2 interfering cells 3 interfering cells 4 interfering cells 6 interfering cells Figure 7: In uence of varying number of interfering cells on the C/I ratios ... [14]. Theoretically, gains from using intercell interference avoidance schemes are large [15], but maximal gains would require fast and tight...

Ngày tải lên: 22/06/2014, 19:20

... coolest neighbors and seek for the destination [1]. Besides, LTR also employs a packet discarding for the sake of maintaining the network bandwidth [1]. Each packet roaming in a network maintains its hop ... to sensors having the minimum temperature but being located even in the opposite direction to destinations. This condition allows packets to stray in networks in a long period o...

Ngày tải lên: 22/06/2014, 19:20