Báo cáo hóa học: " Research Article Construction and Iterative Decoding of LDPC Codes Over Rings for Phase-Noisy Channels ppt

... Communications and Networking Volume 2008, Article ID 385421, 9 pages doi:10.1155/2008/385421 Research Article Construction and Iterative Decoding of LDPC Codes Over Rings for Phase-Noisy Channels Sridhar ... the construction and iterative decoding of low-density parity-check (LDPC) codes for channels affected by phase noise. The LDPC code is b...

Ngày tải lên: 21/06/2014, 23:20

... convergence of an iterative method for equilibrium problems and variational inequality problems,” Fixed Point Theory and Applications, vol. 2009, Article ID 362191, 21 pages, 2009. 19 F. Zhang and ... mapping of the mappings T and I is semicompact, then the implicitly iterative sequence {x n } defined by 1.2 converges strongly to a common fixed point of T and I. Proo...

Ngày tải lên: 21/06/2014, 20:20

... Posteriori Decoding of Channels Codes The BCJR algorithm [28] provides the common framework to the decoding of turbo and LDPC codes as it is applied to the decoding of the two component RSC codes of ... definition of turbo and LDPC codes, and Section 3 reviews the fundamentals of the MAP decod- ing algorithm, going through the BCJR decoding of con- volu...

Ngày tải lên: 21/06/2014, 05:20

... remains fixed for all codewords and over all uses of the channel. Of the handful of methods to reduce PAPR, tone reser- vation is particularly robust and canonical. This is because the only information ... s(t) = s 1 (t)forallt where |s(t)|≤M.Then,s − s 1 has compact support and cannot be band-limited. Since s is band-limited, this means s 1 cannot be band-limited, and thus o...

Ngày tải lên: 21/06/2014, 05:20

... 5 10 −10 −50 5 10 Bandwidth (Kbits/sec)Bandwidth (Kbits/sec) Bandwidth (Kbits/sec) Bandwidth (Kbits/sec)Bandwidth (Kbits/sec) Bandwidth (Kbits/sec) Bandwidth (Kbits/sec) Bandwidth (Kbits/sec) Average 1st 2nd Average 1st 2nd Average 1st 2nd Average 1st 2nd Average 1st 2nd Average 1st 2nd Average 1st 2nd Average 1st 2nd NW 176, ... optimized, and the final performance is improved in terms of...

Ngày tải lên: 21/06/2014, 08:20

... Problems Volume 2010, Article ID 106962, 9 pages doi:10.1155/2010/106962 Research Article Uniqueness and Parameter Dependence of Positive Solution of Fourth-Order Nonhomogeneous BVPs Jian-Ping Sun and Xiao-Yun ... bu  ξ 1  −λ 3 ,cu  ξ 2 du  ξ 2 −λ 4 ,where0≤ ξ 1 <ξ 2 ≤ 1and i i  1, 2, 3, 4 are nonnegative parameters. Some sufficient conditions are given fo...

Ngày tải lên: 21/06/2014, 11:20

... 19 and 110. Some boundedness and convergence properties of the iterative process 4.1 are formulated and proven in the subsequent result. Theorem 4.1. The difference iterative scheme 4.1 and ...  k ∈ 0,β k  1 for uniform boundedness of {e k } and  k ∈ 0,β k  1 for its asymptotic convergence to zero in the case of nonzero e k . iv If |β k |≤1; for all...

Ngày tải lên: 21/06/2014, 20:20

... Theory and Applications Volume 2010, Article ID 765206, 11 pages doi:10.1155/2010/765206 Research Article Regularization and Iterative Methods for Monotone Variational Inequalities Xiubin Xu 1 and ... moreover, a solution is often sought through iteration methods. In the special case where A is of the form A  I − T,withT being a nonexpansive mapping, regularization and i...

Ngày tải lên: 21/06/2014, 20:20

... law of the signal, and the peak of the CPF yields the estimate of the frequency rate. The initial frequency and amplitude can be obtained by the dechirp technique and fast Fourier transform. And ... Processing Volume 2008, Article ID 743985, 7 pages doi:10.1155/2008/743985 Research Article Detection and Parameter Estimation of Multicomponent LFM Signal Based on the Cub...

Ngày tải lên: 21/06/2014, 22:20

... existence of the PC-mild solution of Cauchy problem 3.9 and T 0 -periodic PC-mild solutions for system 3.8, we introduce assumption H2. H2.1: f : 0, ∞ × X → X is measurable for t ≥ 0 and for ... Corporation Fixed Point Theory and Applications Volume 2008, Article ID 401947, 15 pages doi:10.1155/2008/401947 Research Article Bounded and Periodic Solutions of...

Ngày tải lên: 21/06/2014, 23:20