Adaptive Huffman Code

... multimedia 3.3 Cấu hình doanh nghiệp trung bình: Đây cấu hình mạng giành cho doanh nghiệp có qui mô khoảng vài trăm wi-fi user Đáp ứng công nghệ không dây nay, giúp doanh nghiệp hoàn toàn yên ... Nortel đưa giải pháp đáp ứng hầu hết yêu cầu khắt khe doanh nghiệp Từ doanh nghiệp với qui mô nhỏ, vừa đến lớn Từ yêu cầu nâng cấp, bổ xung, hay thay hoàn toàn Tro...

Ngày tải lên: 13/08/2012, 16:51

Ngày tải lên: 17/08/2012, 11:07

... Nhóm 4: Huffman Code I Thuật toán Huffman: 1.Giới thiệu thuật toán Huffman: - Trong khoa học máy tính lý thuyết thông tin, mã Huffman thuật toán mã hóa dùng để nén ... DeFile(): Giải mã file CreateHuffman(): Cài đặt Huffman, sử dụng hàm Duyet(): Tạo bảng mã cho ký tự, sử dụng hàm mã hóa Page http://www.ebook.edu.vn Nhóm 4: Huffman Code III Các vấn đề chung xây ... quát chương trì...

Ngày tải lên: 24/04/2013, 21:48

... four with row seven is the same as the inner product of row two with row five.) The inner product of row two with any row below it is by direct inspection Therefore G 24 is self-dual with all rows ... Fundamentals of Error- Correcting Codes Fundamentals of Error- Correcting Codes is an in-depth introduction to coding theory from both an engineering and mathematical viewpo...

Ngày tải lên: 12/05/2014, 08:35

... Cite this article as: Zhang et al.: Feedback-based adaptive network coded cooperation for wireless networks EURASIP Journal on Wireless Communications and Networking 2011 2011:164 Acknowledgements ... with networks-on-graph: adaptive network coding for wireless relay networks, in Proc Allerton Conf on Commun, Control and Computing, Urbana Champaign, IL (Sept 2005) X Ba...

Ngày tải lên: 20/06/2014, 22:20

... will be used for the CIR system Information Theoretical Analysis Let us consider a system where opportunistic network coding [9] is used As described in Section 2, opportunistic Network Coding consists ... rate LDPC encoder for sink M UM Sink N N Sink CSI for all sinks(γ vector) Figure 3: Transmission scheme at source node for the proposed adaptive transmission sch...

Ngày tải lên: 21/06/2014, 11:20

... chain for video transmission 2.1 Scalable video coding The scalable video codec considered in this paper is based on the wavelet transform performed in temporal and spatial domains [18] In this wavelet-based ... Shannon theory,” IEEE Transactions u on Information Theory, vol 44, no 6, pp 2057–2078, 1998 [2] Q Zhang, W Zhu, and Y.-Q Zhang, “Channel -adaptive resource allocat...

Ngày tải lên: 22/06/2014, 19:20

... of multiple code rates from a single encoder Analysis is performed in order to determine the RD optimal amount of channel code to add to the source-coded frame based on the condition of the time-varying ... image compression standard was created to overcome the drawbacks of the existing widely used JPEG standard [10] MJPEG2000 is the extension to video coding of the JPEG2000...

Ngày tải lên: 22/06/2014, 23:20

... paper, we use adaptive algorithms in the iterative SISO parallel decision-feedback detector (PDFD) for asynchronous coded DS-CDMA systems in order to avoid the need for the a priori information about ... two detectors Adaptive Iterative SISO Parallel Decision-Feedback Detectors 2.5 A training sequence was required by each user We showed that the resulting system pe...

Ngày tải lên: 23/06/2014, 00:20

... present paper, an adaptive near-far robust synchronization array detector for space-time asynchronous DS-CDMA signals is developed The primary requirement needed for the proposed timing synchronization ... scheme with other timing estimation techniques is also evaluated in Section Finally, concluding remarks are given in Section Computationally Efficient Blind Code Synchr...

Ngày tải lên: 23/06/2014, 01:20

... code assignment protocols for both centralized and distributed Ad Hoc Networks We present analytical and simulation results for the proposed code assignments Keywords: Ad Hoc Network, DS- CDMA, ... Spectrum and Ad Hoc Network 2.2 Code Assignment in Ad Hoc Network 2.2.1 Strategies for Code Assignment DS- CDMA code assignment schemes require tha...

Ngày tải lên: 26/09/2015, 10:59

... r(t) Chapter An Improved Rate Search Scheme in Multicode CDMA System - 30 - Chapter An Improved Rate Search Scheme for Multicode CDMA Transmissions over Rayleigh fading mobile radio channels are ... 28 - Chapter An Improved Rate Search Scheme for Multicode CDMA - 30 3.2 System Model - 32 - 3.3 Original Optimal Adaptation Schemes - 35 - 3.3.1 Code...

Ngày tải lên: 28/09/2015, 13:28

... possible! Adaptive Huffman Code • 1-pass adaptive – build code and compress input simultaneously – code is built dynamically at both coder and decoder – code changes with each character encoded ! ENCODER ... a 01100001 b 01100010 Huffman table Huffman table Huffman table NYT NYT (1) a NYT (2) a Input: a Output: 001100001 NYT = Not Yet in Table a B 001000010 Adaptive Huf...

Ngày tải lên: 22/10/2015, 17:09

... locality, adaptive Huffman coding is sometimes able to better than static Huffman coding, i.e., for some messages, it can have a greater compression but we’ve assessed optimality of static Huffman coding, ... in the file In static Huffman coding, that character will be low down on the tree because of its low overall count, thus taking lots of bits to encode In adaptive huffm...

Ngày tải lên: 22/10/2015, 17:10

... of Algorithm FGK helped greatly in the testing of Algorithm A and in the preparation of the figures The entropy argument Design and Analysis of Dynamic Hugman Codes 845 mentioned at the end of ... sender and receiver use the same modification algorithm and thus always have equivalent copies of the tree Design and Analysis of Dynamic H&man W 829 Codes (4...

Ngày tải lên: 30/10/2015, 17:52