Báo cáo hóa học: " Paraunitary Oversampled Filter Bank Design for Channel Coding" docx

... Processing Volume 2006, Article ID 31346, Pages 1–10 DOI 10.1155/ASP/2006/31346 Paraunitary Oversampled Filter Bank Design for Channel Coding Stephan Weiss, 1 Soydan Redif, 1 Tom Cooper, 2 Chunguang ... is the z-transform of the covariance ma- trix of the channel noise, R ww [τ] = E  w[m]w H [m − τ]  , (11) with w[m] ◦—• W(z)asdefinedinFigure 2 . 3. CHANNEL CODER AND FILTE...

Ngày tải lên: 22/06/2014, 23:20

... the design. We also compare the average channel estimate MSE of our proposed design with the PEP design for different channel length L. We evaluate the channel estimate MSE of our proposed designs ... of the channels. The performance of the Baxley design is similar to the pro- posed design for QPSK-modulated data. How ever, for 16-PSK and 64-PSK modulation, our proposed...

Ngày tải lên: 21/06/2014, 03:20

... the design lifec ycle. Specifically, the Interna- tional Standard ISO13407, the Human-Centered Design Process for Iterative Systems, outlines principles of human-centered design that account for ... more suc- cessful HCI VE design guidelines [22]. Sensory perfor- mance is measured before and during the design phase to ensure that the technology assembled is appropriate for the...

Ngày tải lên: 19/06/2014, 08:20

... shuntings before skeletal fixation was performed. After bone fixation vascular reconstruction was done using microsurgical techniques. Reconstruction for vascu- lar injury was performed with ... a mangled lower extremity. Thus, the criteria for salvage of the upper extremity are quite different from those for salvage of the lower extremity for better salvage functional results and poo...

Ngày tải lên: 20/06/2014, 01:20

... transparent to the channel coding scheme; that is, the channel seen by the channel decoder is equivalent to the channel without network coding. This is the reason why no specific design of the channel code is ... to adapt the information rate of each information source IS i to channel i. Each information source IS i chooses a message from a set of 2 nR i different messages. An M-d...

Ngày tải lên: 21/06/2014, 11:20

... thus need to be tracked, channel information should be estimated. Methods [14–16] attempt to perform estimation and equalization jointly, which improve the system performance at the cost of intractable ... of iterations. For each iteration, the MMSE equalizer performs three FFT operations, whose complexity is O(P/2log 2 P) for Radix-2 algorithms, and four matrix operations whose complex...

Ngày tải lên: 21/06/2014, 23:20

... its simplicity and similar performance as T(x). 10 −3 10 −2 10 −1 10 0 MSE for channel estimation 024681012141618 E p /N 0 (dB) MSE for symbol long and partial channel estimation T f = 30 ns, ... ns L w = 90 ns Figure 9: MSE performance for channel estimation with different lengths. 10 −4 10 −3 10 −2 10 −1 MSE for δ estimation 024681012141618 E p /N 0 (dB) MSE for δ estimation...

Ngày tải lên: 21/06/2014, 23:20

... estimator for the optimal 2P format. Extensions of this algorithm for joint carrier phase/Doppler-shift and Doppler-rate estimation for the 2P format, the 3P format, and the sub-optimum 4P format, ... the CRB for the estimation of Doppler-shift and Doppler-rate are derived. O ur analysis showed that the 2P format is optimum for Doppler-shift estimation and that the 3P format is opti...

Ngày tải lên: 22/06/2014, 19:20

... method to design allotted LDPC codes for DMT channels. The method is general and can be used for every nonuniform channel. This method allows for design of optimized LDPC codes which outperform conven- tional ... with nonuniform channels. This paper is organized as follows. In Section 2,webriefly review the required background of nonuniform channels and LDPC coding for uniform and...

Ngày tải lên: 22/06/2014, 19:20

... either uniform QPSK or uniform 8-PSK without channel coding. (2) A 2-layer system using nonuniform 8-PSK without channel coding. (3) A single-layer system using either uniform QPSK or uniform 8-PSK ... concealment for video. In Section 3, we briefly describe the channel models used and provide the performance analysis for the coded and uncoded systems employing nonuniform MPSK over R...

Ngày tải lên: 22/06/2014, 19:20