Báo cáo hóa học: " Research Article Characterization and Optimization of LDPC Codes for the 2-User Gaussian Multiple Access Channel" docx

... 10 pages doi:10.1155/2007/74890 Research Article Characterization and Optimization of LDPC Codes for the 2-User Gaussian Multiple Access Channel Aline Roumy 1 and David Declercq 2 1 Unit ´ e ... paper has tackled the optimization of LDPC codes for the 2-user Gaussian MAC and has shown that it is possi- ble to design good irregular LDPC code...

Ngày tải lên: 22/06/2014, 19:20

... Zhong and Huang 40. Therefore, Theorem 4.3 is a generalization of 40, Theorem 4.2. Moreover, by 40, Remark 4.2, Theorem 4.3 ia also a generalizationof Theorems 4.1 and 4.4 due to He 38 and ... we further study the characterizations of the boundedness and nonemptiness of solution sets for set-valued vector equilibrium problems in reflexive Banach spaces, when both t...

Ngày tải lên: 21/06/2014, 06:20

... impulse. The main purpose of this paper is to study the existence and global exponential stability of anti-periodic solutions of system 1.1 by using the method of coincidence degree theory and Lyapunov ... Conclusions Using the time scales calculus theory, the coincidence degree theory, and the Lyapunov functional method, we obtain sufficient conditions for the e...

Ngày tải lên: 21/06/2014, 07:20

... before it forwards them through the serial port to the laptop. The first octet is a counter value, which will be discussed later, and the second octet is the radio’s calculation of the RSSI for ... errors toward the end of the packets. 3.6. Multiple Access. The transmit and receive buffer sizes for the CC2420 radio on the MicaZ motes are equivalent. As a res...

Ngày tải lên: 21/06/2014, 18:20

... referee for valuable suggestions and comments, which improved the quality of this paper. The work was supported by the NSF of China, the NSF of Jiangxi Province of China 2008GQS0057, the Youth ... T-periodic solution under the assumptions A1 and A2  . Thus, even for the case of ϕsϕ p s, Theorem 2.1 is a generalization of 7, Theorem 1. In additio...

Ngày tải lên: 21/06/2014, 18:20

... nontrivial solution of the BVP 1.1 and 1.2. Next, we show the uniqueness of solutions of the BVP 1.1 and 1.2. Assume, to the contrary, that there exist two nontrivial solutions y 1 and y 2 of the BVP ... y. 3.40 By the uniqueness of fixed points A in D,weget y  y ∗ . Therefore, we have lim n →∞ x n  lim n →∞ y n  y ∗ . 3.41 This completes the proo...

Ngày tải lên: 21/06/2014, 18:20

... completes the proof of the theorem. Hindawi Publishing Corporation Boundary Value Problems Volume 2010, Article ID 254928, 16 pages doi:10.1155/2010/254928 Research Article Existence and Uniqueness of ... 27. Recently, Du and Zhao 7, by constructing lower and upper solutions and together with the maximal principle, proved the existence and uniqueness of positi...

Ngày tải lên: 21/06/2014, 18:20

... I τ−1 0] and D 2 = [I τ−1 0; 0 0]. These estimates of C and A constitute the model parameters for each action segment. For the case of flow, the same estimation procedure is repeated for the x-andy-components ... events in the scene. Their system consists of algorithms which track humans and vehicles on the image plane of the camera and which render the tr...

Ngày tải lên: 21/06/2014, 20:20

... addition to the set of the candidates Φ, two other noise correlation candidates are taken into account to enhance the performance of the separation and the speech enhancement. The first one is the identity ... adaptation,” the output of one of the microphones and the separated output are compared. In the case of “before separation,” the microphone closest...

Ngày tải lên: 22/06/2014, 19:20

... movement steps and the uniformity of presence probabilities of void cells, in Figure 10 we plot the mean and the standard deviation of the presence probabilities of void cells as the number of movement ... plot the standard deviation of thepresenceprobabilitiesofvoid cells with log 10 S T .Note that the standard deviation of presence probabilities of void cel...

Ngày tải lên: 21/06/2014, 05:20