báo cáo hóa học:" Research Article Progressive Refinement of Beamforming Vectors for High-Resolution Limited Feedback" potx

... 2009, Article ID 463823, 13 pages doi:10.1155/2009/463823 Research Article Progressive Refinement of Beamforming Vectors for High-Resolution Limited Feedback Robert W. Heath Jr ., 1 Tao Wu, 2 and ... facilitates high-resolution limited feedback beamforming. The key idea is the use of two codebooks: a nonlocal codebook and a local codebook, to implement a progressi...

Ngày tải lên: 21/06/2014, 20:20

... 2008, Article ID 717614, 14 pages doi:10.1155/2008/717614 Research Article A Refinement of Jensen’s Inequality for a Class of Increasing and Concave Functions Ye Xia Department of Computer and Information ... 1.16 Ye Xia 9 For part b of Theorem 1.2, the proof requires xp − θ 2 σ 2 p to be within the domain of the function f for various unknown weight vectors p...

Ngày tải lên: 22/06/2014, 03:20

... true; (ii) if Q ∗ as defined in (18) is used instead of Q C , the SNR performance of the system is identi- cal for sufficiently large number of bits of feedback. Again it is worth mentioning that Q C is ... in Signal Processing Volume 2008, Article ID 594928, 15 pages doi:10.1155/2008/594928 Research Article A Diversity Guarantee and SNR Performance for Unitary Limited Feedba...

Ngày tải lên: 22/06/2014, 06:20

... case of quantized precoding [24–27]. In this case, the elements of F are submatrices of the M t × M t identity matrix. In particular, every combination of M s columns of the identity matrix forms ... true; (ii) if Q ∗ as defined in (18) is used instead of Q C , the SNR performance of the system is identi- cal for sufficiently large number of bits of feedback. Again it is wort...

Ngày tải lên: 22/06/2014, 19:20

... Corporation Journal of Inequalities and Applications Volume 2011, Article ID 936428, 15 pages doi:10.1155/2011/936428 Research Article Boundedness and Nonemptiness of Solution Sets for Set-Valued ... point theorems for a family of nonexpansive multivalued mappings,” Journal of Global Optimization, vol. 34, no. 1, pp. 15–32, 2006. 24 L. J. Lin and H. W. Hsu, “Existence theo...

Ngày tải lên: 21/06/2014, 06:20

... Corporation Journal of Inequalities and Applications Volume 2010, Article ID 132790, 19 pages doi:10.1155/2010/132790 Research Article Existence and Stability of Antiperiodic Solution for a Class of Generalized ... “Existence of anti-periodic solutions for Li ´ enard equations,” Journal of Mathematical Study, vol. 40, no. 2, pp. 187–195, 2007 Chinese. 19 B. Liu, “Anti-...

Ngày tải lên: 21/06/2014, 07:20

... and Networking Volume 2010, Article ID 103406, 11 pages doi:10.1155/2010/103406 Research Article Design and Implementation of a Testbed for IEEE 802.15.4 (Zigbee) Performance Measurements Patrick ... number of received bits ) PER =  Number of received packets with at least one error  +  Number of partial packets received   Total number of received packets  PLR =  N...

Ngày tải lên: 21/06/2014, 18:20

... after the initials of authors, exploits the property of the moment-generating function (MGF) that the product of MGFs of independent RVs equals to the MGF of the sum of RVs. The MGF of RV Y is defined ... be vital for further system improvements. In spite of the recent efforts for the performance evaluation of femtocells, most of the works relied on system simulation exp...

Ngày tải lên: 21/06/2014, 18:20

... Difference Equations Volume 2010, Article ID 197263, 11 pages doi:10.1155/2010/197263 Research Article Existence and Uniqueness of Periodic Solutions for a Class of Nonlinear Equations with p-Laplacian-Like ... supported by the NSF of China, the NSF of Jiangxi Province of China 2008GQS0057, the Youth Foundation of Jiangxi Provincial Education Department GJJ09456, and th...

Ngày tải lên: 21/06/2014, 18:20

... 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 proof of the theorem. Remark 3.2. From the proof of Theorem ... Corporation Advances in Difference Equations Volume 2010, Article ID 971540, 18 pages doi:10.1155/2010/971540 Research Article Existence and Uniqueness of Positive Solutions for Discret...

Ngày tải lên: 21/06/2014, 18:20