of the Dissertation Timing Recovery Using Soft Information Feedback and Efficiency of Array Codes by Esteban Luis Vallés Doctor of Philosophy in Electrical Engineering University of California, Los Angeles, 2007 Professor John D. Villasenor, Co-Chair Professor Richard D. Wesel, Co-Chair The main contribution of the thesis provides techniques for symbol frequency and phase tracking in a pilotles...

What is the relation between the material, conventional symbol structures that we encounter in the spoken and written word, and human thought? A common assumption, that structures a wide variety of otherwise competing views, is that the way in which 10 these material, conventional symbol-structures do their work is by being translated into some kind of content-matching inner code. One alternati...

The paper presents the project to Power System Stabilizer applied to the generators of the gas turbines of Combined Cycle Power Station. The project developed used MATLAB software for the stabilizer’s parameters calculation. The calculation was gotten from the linear model based on a machine connected on an infinite-bus. The stabilizers had been used to increase the machine eletromechanic oscil...

This paper addresses turbo-encoder design for coding with high spectral efficiency using parallel concatenated trellis-coded modulation and symbol interleaving. The turbo-encoder design involves the constituent encoder design and the interleaver design. The constituent encoders are optimized for symbol-wise effective free distance, and each has an infinite symbol-wise impulse response. We ident...

A canonical Huffman code is an optimal prefix-free compression whose codewords enumerated in the lexicographical order form a list of binary words non-decreasing lengths. Gagie et al. (2015) gave representation this coding capable encoding and decoding symbol constant worst-case time. It uses σlg⁡ℓmax+o(σ)+O(ℓmax2) bits space, where σ ℓmax are alphabet size maximum codeword length, respectively...

This paper introduces the working principle and the mathematical model of additional power system excitation control-Power System Stabilizer (PSS). Through established a typical single machine-infinite bus power system simulation model, we simulate the synchronous generator’s transient operational characteristics following a severe disturbance. The simulation results show that the PSS can not o...

This paper describes the use of orthogonal space-time block codes to overcome the performance and complexity difficulties associated with the use of Shaped Offset QPSK (SOQPSK) modulation, a ternary continuous phase modulation (CPM), in multiple-input multiple-output telemetry systems. The orthogonal space-time block code is applied to SOQPSK waveforms in the same way it would be applied to sym...

A scheme of multichannel adaptive turbo equalizer for large delay spread sparse underwater acoustic channel is presented, with a complexity of single DSP chip implementation. Channel equalizer without input of decoder’s soft information is structured as multichannel feed-forward (FF) filter with phase lock loop (PLL), and during iterative processing with decoder, an intersymbol interference can...

Abstract In this paper, we compare the convergence thresholds of parallel and serially concatenated codes with interleaver that employ iterative decoding algorithms working at bit or symbol level. The analysis technique is an extension to the symbollevel decoder of that presented in [1], and is valid for very large interleavers. The comparison shows that working at symbol level always yields a ...