linear block codes ppt

... these codes can provide very useful re- sults at low SNR. At high SNR, they perform worse than O- STBC due to the reduced diversity. Recently, improved quasi- orthogonal space-time block codes ... on quasi-orthogonal codes, ” IEEE Transactions on Wireless Com- munications, vol. 4, no. 6, pp. 3018–3030, 2005. [13] L Y. Song and A. G. Burr, “Differential quasi-orthogonal space-time block codes, ” IEEE ... constellation expansion; in addition it has a linear signal detector with very low complexity. Simulation results show that these partial-diversity codes can provide very useful results at low...

Ngày tải lên: 22/06/2014, 19:20

... Block Diagram of SwitchBlock Diagram of Switch Mode RegulatorMode Regulator It converts an unregulated dc input...

Ngày tải lên: 13/12/2013, 23:15

... Edition Copyright © 2004 O’Reilly & Associates, Inc. All rights reserved. 858 | Appendix F: HTTP Status Codes Client Error 4xx: 400 HTTP_BAD_REQUEST 401 HTTP_UNAUTHORIZED 402 HTTP_PAYMENT_REQUIRED 403 ... eMatter Edition Copyright © 2004 O’Reilly & Associates, Inc. All rights reserved. HTTP/1.1 Status Codes | 857 202 HTTP_ACCEPTED 204 HTTP_NO_CONTENT Redirection 3xx: 300 HTTP_MOVED_PERMANENTLY 301 ... HTTP_INTERNAL_SERVER_ERROR 501 HTTP_NOT_IMPLEMENTED 502 HTTP_BAD_GATEWAY 503 HTTP_SERVICE_UNAVAILABLE HTTP/1.1 Status Codes Informational 1xx: 100 HTTP_CONTINUE 101 HTTP_SWITCHING_PROTOCOLS Successful 2xx: 200 HTTP_OK 201...

Ngày tải lên: 21/01/2014, 06:20

... stabilizers, and amphiphilic block copolymers / editor, Liudvikas Segewicz and Marijus Petrowsky. p. cm. Includes index. ISBN 978-1-61470-600-7 (eBook) 1. Block copolymers. I. Segewicz, ... Surface Region of Glassy Polymers 243 Z. Yang Chapter 9 Current Developments in Double Hydrophilic Block Copolymers 291 G. Mountrichas and S. Pispas Chapter 10 Thermo-Oxidation Stability of Poly ... Research and Review and Studies Induced Self-Assembly of Diblock Copolymers 9 Figure 1-1 -13. The UV spectrum of Wurster‘s blue chloride produced through...

Ngày tải lên: 12/02/2014, 16:20

... Injection 106 6.6.3 Reservoir-Pressure Effect 108 6.7 Matrix -Block Height Effect 110 6.8 Matrix -Block- Permeability Effect 112 6.9 Block- to -Block Interaction 114 6.10 Conclusions 116 6.11 References ... days vs. reservoir pressure for Single matrix block system 110 Figure 6.15 – Effect of matrix block height on oil recovery vs. time for single matrix block using equilibrium (dash line) and CO 2 ... recovery vs. time for single matrix block at system pressure of 1400 psia 108 Figure 6.13 – Effect of reservoir pressure on oil recovery vs. time for single matrix block system using equilibrium...

Ngày tải lên: 23/03/2014, 15:20

... degrading its performance. In this work, we state that non-binary linear alphabets cannot avoid these parameters and some exclusive codes even imply them; contrary XOR does not. We define alphabets ... dimensionality. Linear modulations (e.g., PSK, QAM) have single complex dimension, i.e., N s = 1 and their con- stellation vectors are complex scalars s c t ∈ C . Later in this paper, we will use non -linear ... presented in Table 2. The first part of the table describes bandwidth of linear memoryless alphabets (denoted shortly as Linear A ’) which is solely given by used pulse function [20]. We present...

Ngày tải lên: 20/06/2014, 22:20

... subtractivity. Linear Algebra Appl. 82, 145–161 (1986). doi:10.1016/0024-3795(86)90148-5 7. Baksalary, JK, Hauke, J, Liu, X, Liu, S: Relationships between partial orders of matrices and their powers. Linear ... partial orderings. Linear Algebra Appl. 375,83–94 (2003) 9. Baksalary, JK, Baksalary, OM, Liu, X: Further relationships between certain partial orders of matrices and their squares. Linear Algebra ... matrix partial orderings and reverse order law. Electron J Linear Algebra. 20, 254–273 (2010) 11. Mitra, SK: Infimum of a pair of matrices. Linear Algebra Appl. 105, 163–182 (1988). doi:10.1016/0024-3795(88)90010-9 12....

Ngày tải lên: 21/06/2014, 00:20

... configurations. Configuration Hit Rate False Positives Gray Codes 75.98% 47 Gray Codes + Clustering 77.51% 44 Gray Codes + XOR 79.31% 36 GrayCodes+Clustering+XOR 83.41% 34 The quality criterion proposed ... pages doi:10.1155/2010/909043 Research Article Red-Eyes Removal through Cluster-Based Boosting on Gray Codes Sebastiano Battiato, 1 Giovanni Maria Farinella, 1 Mirko Guarnera, 2 Giuseppe Messina, 2 and ... In the second stage, a multimodal classifier, obtained by using clustering and boosting on gray codes features, is used to distinguish between true red-eyes patches versus other patches. Once...

Ngày tải lên: 21/06/2014, 08:20

... of the network group. In this paper, we used the DaVinci codes, that is, the nonbinary LDPC codes from the DaVinci project [17]. For such codes the order of the Galois field is q = 64 = 2 6 , that ... 1991. [17] http://www.ict-davinci -codes. eu/. [18] S. Pfletschinger, A. Mourad, E. L´opez, D. Declercq, and G. Bacci, “Performance evaluation of non-binar y LDPC codes, ” in Proceedings of the ICT ... message mixing at intermediate nodes (routers) allows to achieve such c apacity. Linear network coding consists of linearly combining packets at intermediate nodes and, among other advantages [2], allows...

Ngày tải lên: 21/06/2014, 11:20

... codes (STTCs) [2, 3], space-time block codes (STBCs) [4, 5], and super-orthogonal space-time trellis codes (SOSTTCs) [6, 7]. SOSTTCs are a new class of space-time codes that combine set partitioning ... two-symbol blocks with L rays, is given by 2 ∗(L−1)∗S,whereS is the original number of states of the super-orthogonal block code in space-time domain. 3.2. Super-Orthogonal Block Codes for OFDM. ... provided the original work is properly cited. Super-orthogonal block codes in space-time domain (i.e., Super-orthogonal space-time trellis codes (SOSTTCs)) were initially designed for frequency nonselective...

Ngày tải lên: 21/06/2014, 17:20

... L- aspartate) block copolymer micelles. J Pharm Sci 1996, 85:85-90. 4. Kwon GS, Naito M, Yokoyama M, Okano T, Sakurai Y, Kataoka K: Physical entrapment of adriamycin in AB block copolymer ... for block copolymerization because it has one reductive end. DexbLG copolymer was synthesized by the coupling of aminated dextran and PLGA as described previously (Figure 1b) [13]. In the block ... 9. Liu L, Cao Y, Chen C, Zhang X, McNabola A, Wilkie D, Wilhelm S, Lynch M, Carter C: Sorafenib blocks the RAF/MEK/ERK pathway, inhibits tumor angiogenesis, and induces tumor cell apoptosis in...

Ngày tải lên: 21/06/2014, 17:20

... imperfect carrier offset compensation on the performance of space-time block codes. The symbol error rate (SER) for orthogonal space-time block code (OSTBC) is derived here by taking into account the ... Tao, L. Jianfeng, H. Jianjun, and Y. Guangxin, “Performance analysis for orthogonal space-time block codes in the absence of perfect channel state information,” in Proceedings of the 14th IEEE International ... “Effect of imperfect channel in- formation on M-QAM SER performance of orthogonal space- time block codes, ” in Proceedings of the 57th IEEE Semiannual Vehicular Technology Conference (VTC ’03),...

Ngày tải lên: 22/06/2014, 19:20

... behavior with LDPC codes. On the other hand, more and more standards use modern coding schemes like LDPC or Turbocodes, which means that looking for UEP capabilities with these codes is indeed a ... LDPC codes have been extended to the case of Raptor codes [19]; but however, no other channel than the BEC has been considered so far for the characterization of the UEP behavior of LDPC codes. ... LDPC codes for joint source-channel decoding,” IEEE Communication Letters , vol. 9, no. 12, pp. 1064–1066, 2005. [9] I. M. Boyarinov and G. L. Katsman, Linear unequal error protection codes, ”...

Ngày tải lên: 22/06/2014, 19:20

... RSC1 Figure 4: Iterative decoding model of the system. Table 1: Huffman codes and RVLCs used in the simulations. Symbols Probabilities Huffman codes RVLCs uP(U = u) c(u) (H) c(u) (R) 00.5 1 1 10.25 01 00 2 ... should state that the performance advantage in the simulations lies on using suboptimal codes, and the opti- mal codes for the proposed system still need to be found. This could be implemented by ... 9] Due to the out- standing decoding performance at low signal-to-noise ratio (SNR) level, turbo codes [10] have entered into service in many communication applications; naturally, the new sub- ject...

Ngày tải lên: 22/06/2014, 19:20

... Article Power-Efficient Relay Selection in Cooperative Networks Using Decentralized Distributed Space-Time Block Coding Lu Zhang and Leonard J. Cimini Jr. Department of Electrical and Computer Engineering, ... luzhang@udel.edu Received 1 May 2007; Accepted 8 September 2007 Recommended by R. K. Mallik Distributed space-time block coding (Dis-STBC) achieves diversity through cooperative transmission among geographically ... subset of the decoded nodes is selected to act as the relay set. In [2], a dis- tributed space-time block code (Dis-STBC) was proposed in which each relay transmits one unique column of the under- lying...

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