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Coding analysis of the IS-95A reverse link
(Texas A&M University, 1999)
The IS-95A reverse link CDMA system is analyzed from a channel coding point of view. Analytical performance is derived for the Viterbi decoder to perform hard decision decoding. A dual-max decoding metric is suggested to ...
Wavelength tunable polarization mode converter utilizing static strain effects in lithium niobate
(Texas A&M University, 1999)
Electro-optically tunable polarization mode converters have been produced in LiNbO₃ substrate using all static strain optic effects. Maximum conversion efficiency of 98.3% was achieved at 66414m wavelength in TE to TM ...
Robustness of optimal binary filters: analysis and design
(Texas A&M University, 1999)
Optimal binary alters estimates an unobserved ideal aphics. image from an observed image. Optimality is with respect to some error criterion, which is mean absolute error for the binary images. Both the ideal and observed ...
A study of microstrip T-juction discontinuity effects and modeling on GAAS substrates
(Texas A&M University, 1999)
One of the most important microstrip discontinuities used in hybrid and monolithic MIC circuit design is the T-junction. T-junctions are heavily used in a variety of microstrip circuits including impedance matching networks, ...
Multiple description source coding for mobile radio channels
(Texas A&M University, 1999)
The topic of this thesis is the transmission of a memoryless source over a slow fading channel. It should be noted that when a channel is specified as a slow fading channel, it does not specify whether the channel is flat ...
An iterative technique for refinement of selective excitations for magnetic resonance imaging
(Texas A&M University, 1999)
Selective RF pulses are needed or many application in magnetic resonance imaging (MRI). The desired excitation profile is omen used as the spectrum of the applied RF pulse; the modulation waveform of the RF pulse which ...
A new and efficient error resilient entropy code for image and video compression
(Texas A&M University, 1999)
Image and video compression standards such as JPEG, MPEG, H.263 are severely sensitive to errors. Among typical error propagation mechanisms in video compression schemes, loss of block synchronization causes the worst ...
A multi-band phase-locked loop frequency synthesizer
(Texas A&M University, 1999)
A phase-locked loop (PLL) frequency synthesizer suitable for multi-band transceivers is proposed. The multi-band PLL frequency synthesizer uses a switched tuning voltage- controlled oscillator (VCO) that covers a frequency ...
Chaotic generation of pseudo-random numbers
(Texas A&M University, 1999)
Generation of repeatable pseudo-random sequences with chaotic analog electronics is not feasible using standard circuit topologies. Component variation caused by imperfect fabrication causes the same divergence of output ...
An improved method for weighted least squares IIR filter design
(Texas A&M University, 1999)
Recently, a new method for IIR weighted least squares filter design has been proposed. In this method, the problem of approximating a desired frequency response using a rational function is solved using an iterative approach. ...