linear block codes examples 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

... been severely damaged by the sliding of a large block of rock on which the road had been built (to the right of the upper picture). The rock block was able to slide because there was a large-scale ... have formed a rock block which has slid downwards. The traces of dust in Fig. 2.4a and the clouds of dust in Fig. 2.4b were not caused by blasting: the unstable rock block slid down under ... are highlighted by the photograph in Fig. 1.2. CHILE - Continuous, Homogeneous, Isotropic and Linearly Elastic; DIANE - Discontinuous, Inhomogeneous, Anisotropic and Not-Elastic. These refer...

Ngày tải lên: 05/03/2014, 16:20

... engineering rock mechanics course at Imperial College, Uni- versity of London, plus many extra examples to ensure that the book is comprehensive and is suitable for all reader purposes and ... referred to throughout as “ERM 1”. Engineering rock mechanics: part 2 Illustrative worked examples John R Harrison Senior Lecturer in Engineering Rock Mechanics Imperial College of ... (lbf/in2) with equal facility: 1 MPa * 145 psi. Part A: I I I ust ra t ive worked examples - Questions and Answers xvi Units and symbols Symbol Quantity Name of SI unit...

Ngày tải lên: 14/03/2014, 14:20

... our knowledge, our work is the first linear- time incremental parser that performs dynamic programming. The parser of Roark and Hollingshead (2009) is also almost linear time, but they achieved this ... ∼8 times faster with the simplified edge-factored model in plot (c). Plot (d) shows the (roughly linear) correlation between parsing accuracy and search quality (avg. model score). 10 0 10 2 10 4 10 6 10 8 10 10 10 12 ... Sweden, 11-16 July 2010. c 2010 Association for Computational Linguistics Dynamic Programming for Linear- Time Incremental Parsing Liang Huang USC Information Sciences Institute 4676 Admiralty Way,...

Ngày tải lên: 17/03/2014, 00:20

... kiểu nail color block này, bạn có thể chọn son đỏ hoặc hồng cùng tông màu trên móng, hay kết hợp với trang phục cùng tông màu, nhưng nhớ đừng quá đà nhé. Tự vẽ nail color block chơi Noel ... khả năng của bạn. Xu hướng vẽ móng color block được giới chơi nail mê mẩn. Bạn có thể tự vẽ tại nhà mà chẳng cần đến những hiệu nail đắt đỏ. Color block là xu hướng thịnh hành từ thời trang ... lượt từng móng theo hình minh họa. Đã hoàn thành bộ nail color block sành điệu. Bạn có thể thực hiện nhiều kiểu nail color block với những gam màu khác nhau, hãy tham khảo 2 mẫu nail dưới...

Ngày tải lên: 22/03/2014, 13:20

... formalize these constraints using Integer Linear Programming. 4.1 Challenging cases We want to distinguish between phenomena such as in the following two examples. f K2 so I’m like on the bank on ... current and previous contribution. 4.3 Constraints using Integer Linear Programming We formulate our constraints using Integer Linear Programming (ILP). This formulation has an ad- vantage over ... developed a coding manual which describes, in a reproducible way, how to apply the codes listed above. The six codes we use, along with their frequency in our corpus, are given in Table 1. In the...

Ngày tải lên: 23/03/2014, 16:20

... J p := sI p 1 − J p 1 (a 1 ) ⊕···⊕sI p ν − J p ν (a ν ). (7) and also the q blocks of the second uniquely defined block sH q - I q correspond to the i.e.d.  s q 1 , ,  s q σ , σ  j=1 q j = ... November 2011 References 1. Kalogeropoulos, G: Matrix Pencils and Linear System Theory. City University Press, London (1985) 2. Rough, WJ: Linear System Theory. Prentice Hall, Upper Saddle River, New ... Chelsea (1959) 6. Datta, BN: Numerical Linear Algebra and Applications. Cole Publishing Company (1995) 7. Dassios, IK: Solutions of higher-order homogeneous linear matrix differential equations...

Ngày tải lên: 20/06/2014, 22:20

... isotherm originates from chains reorientations of two blocks. Such reorien- tations are the result of the balance between block- block and block interface interactions. In particular, the appearance ... the protruding hydrophilic spots, consisting indeed of PAA blocks, and the flat hydrophobic regions, due to th e assembly of PnBuA blocks. Figure 2b shows the effect of the Au sputtering deposition. ... distribution onto the block copoly- mer domains, studied by AFM, seems strongly affected by the bilayer annealing, showing an apparent return of the initial dephasing of the HP-LB block copolymer film....

Ngày tải lên: 21/06/2014, 05:20

... resulted coded blocks of length N i + N c = N i /R c are then sent by the source (UT or BS) over the source-destination and source-RN links. (ii) Relaying Phase. The RN decodes the received block, using ... destination. Denoting by PER x the block error probability at destina- tion provided by the algorithm x, if the messages transmitted by RNs are correct, and by PER S−R1 and PER S−R2 the block error probabilities ... different puncturing patterns for the two transmissions. Usually, Con- volutional Turbo Codes (CTCs) or Low Density Parity Check (LDPC) codes are employed to implement the distributed FEC. 4.2.1. Distributed...

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

... different ways, and hence there is a link indicated in Figure 4 between FF transmission block and CSI computational block. A temporal representation of the entire process is also given in Figure 4. The ... applicability of the results, a block- fading channel with Rayleigh fading statistics is used. However, the proposed methods are applicable in general for any block- fading channel, with other ... paper is that having partial or complete instantaneous TBIR leads to a lower packet loss rate in block- fading channels assuming the availability of partial CSIT. We provide a framework for the...

Ngày tải lên: 21/06/2014, 22:20

... data transmission. The transmission is organized in a blockwise fashion, that is, feedback is only possible at the beginning of each new block, and every block has a duration of T f .We assume the channel ... orthogonal space-time block codes, ” IEEE Transactions on Signal Processing , vol. 53, no. 1, pp. 64–73, 2005. [17] G. Leus, C. Simon, and N. Khaled, “Spatial multiplexing with linear precoding in ... space-time linear precoders and decoders,” IEEE Transactions on Signal Processing, vol. 50, no. 5, pp. 1051–1064, 2002. [2] D. P. Palomar, M. Bengtsson, and B. Ottersten, “Minimum BER linear transceivers...

Ngày tải lên: 21/06/2014, 22:20

... transmitted on blocks of subcarriers that are equidistantly distributed over the N subcarriers. Thus, Q = ML,whereL stands for the number of blocks and M the number of subcarriers per block. The ... (q  / =q, u  = u) is the intrablock interference, caused by the other symbols transmitted by the desired user u.From now on, we group the self-interference and the intrablock interference both caused ... f )is a periodic function with period 1/LT = KM/NT,which corresponds to the spacing between two blocks of M adjacent subcarriers. Also note that when M increases, it can be EURASIP Journal on...

Ngày tải lên: 21/06/2014, 23:20

... 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),...

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