Báo cáo hóa học: " Research Article Diversity Analysis of Distributed Space-Time Codes in Relay Networks with Multiple Transmit/Receive Antennas" pot

... pages doi:10.1155/2008/254573 Research Article Diversity Analysis of Distributed Space-Time Codes in Relay Networks with Multiple Transmit/Receive Antennas Yindi Jing 1 and Babak Hassibi 2 1 Department of Electrical Engineering ... environment using space-time coding [1–4]. Recently, with the increasing interestin ad hoc networks, researchers have been looki...

Ngày tải lên: 22/06/2014, 19:20

... overhead in the uplink becomes 10.41% when N = 30 and μ = 5. In Figures 3 and 4, note that a diminishing gain is observed as the number of band CQI reports increases. Taking the overhead associated with ... L. J. Cimini Jr., and H. Zheng, “Joint channel-aware and queue-aware data scheduling in multiple shared wireless channels,” in Proceedings of IEEE Wireless Communications a...

Ngày tải lên: 21/06/2014, 23:20

... access point (BS or RS) in the case of single-path relaying. In the case of cooperative relaying they are jointly served by BS and RS if the received signal power of the two radio access points is within ... presented in the context of WiMAX in [24]. The results in [26] have been obtained for relays deployed above rooftop and with more relays per sector. Increasing the amo...

Ngày tải lên: 21/06/2014, 23:20

... used diversity reception methods em- ployed in digital communication receivers are maximal-ratio combining (MRC), equal-gain combining (EGC), selection combining (SC), and switch and stay combining ... 0.9 0.2 0.3 0.4 0.5 0.6 0.7 Amount of fading (AoF) Figure 2: Amount of fading (AoF) versus the Ricean K-factor for several values of the correlation coefficient ρ. show that as K increa...

Ngày tải lên: 22/06/2014, 19:20

... provide full frequency multiplexing and diversity due to their spectrum sensing and software defined radio features. In the case of multiplexing, information (or signal) is splitted into K data nonequal ... given in (7) which is defined as the Laplace transformofthePDFoftheSNR[19]. Let the SNR at the end of a single link in the case of conventional single band spectrum utilization...

Ngày tải lên: 21/06/2014, 05:20

... Processing, vol. 42, no. 6, pp. 1335–1351, 1994. [10] T. Y. Al-Naffouri, A. Zerguine, and M. Bettayeb, “A unifying view of error nonlinearities in LMS adaptation,” in Proceedings of the IEEE International ... (43) Second, the following assumption is to be used in the follow- ing ensuing analysis: (A4) The aprioriestimation error e an with zero-mean is independent of {w n }. The...

Ngày tải lên: 21/06/2014, 08:20

... conditions of the globally attractive prey-extinction boundary periodic solution of the investigated system are obtained. Finally, the permanence of the investigated system is also obtained. Our ... Laboratory of Economic System Simulation, School of Mathematics and Statistics, Guizhou College of Finance and Economics, Guiyang 550004, China 2 Institute of Mathematics, Academy o...

Ngày tải lên: 21/06/2014, 11:20

... Li, 1 Steven D. Blostein, 2 and Jiay in Qin 3 1 Faculty of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China 2 Department of Electrical and Computer Engineering, Queen’s ... in OSTBCs, substituting the exact relay gain into (11)yields(4), and substituting the ideal relay gain into (11)yields(5). Remark 2. Using maximal ratio combining (MRC) at...

Ngày tải lên: 21/06/2014, 11:20

... (33) where P G = 12 in (33) is the processing gain obtained from the spreading code of length 4, and (3,1) repetition code in the case of normal CP [1, 2]. In case of extended CP, a maximum of 4 HI channels ... use of scalable OFDM (orthogonal frequency division multiplexing, used on the downlink with channel bandwidth of 1.4 all the way up to 20 MHz.) together with MIMO...

Ngày tải lên: 21/06/2014, 11:20

... Imaging, vol. 22, no. 10, pp. 1235–1251, 2003. [5] M. Lindquist and T. Wager, “Modeling the hemodynamic response function using inverse logit functions,” in Proceedings of Human Brain Mapping ... to inferring the hidden states we also provide for inference on the parameters. This involves augmenting the state vector with the parameters and treating them as slowly varying states (as in...

Ngày tải lên: 21/06/2014, 20:20