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Inventor:
Van Stralen; Nick Andrew
Address:
Schenectady, NY
No. of patents:
10
Patents:












Patent Number Title Of Patent Date Issued
7127656 Turbo decoder control for use with a programmable interleaver, variable block length, and multip October 24, 2006
A turbo decoder control comprises an address generator for addressing systematic data, parity data, and systematic likelihood ratios according to a pre-determined memory mapping. The systematic data samples are accessed in the order required by the MAP decoding algorithm such that in
6516437 Turbo decoder control for use with a programmable interleaver, variable block length, and multip February 4, 2003
A turbo decoder control comprises an address generator for addressing systematic data, parity data, and systematic likelihood ratios according to a pre-determined memory mapping. The systematic data samples are accessed in the order required by the MAP decoding algorithm such that in
6304996 High-speed turbo decoder October 16, 2001
A high-speed turbo decoder utilizes a MAP decoding algorithm and includes a streamlined construction of functional units, or blocks, amenable to ASIC implementation. A gamma block provides symbol-by-symbol a posteriori state transition probability estimates. Two gamma probability functio
6304299 System and method for mitigating multipath effects in television systems October 16, 2001
A wide-band overlay sequence generator adds an overlay signal to a television signal which is transmitted through a channel. At a receiver, a replica of the transmitted overlay sequence is generated and synchronized to the overlay signal in the received signal. An adaptive equalizer filt
6263467 Turbo code decoder with modified systematic symbol transition probabilities July 17, 2001
A feedback control for a turbo decoder controls the feedback between component decoders of the turbo decoder by substituting either a neutral value or a weighted value for the channel transition probabilities utilized by each component decoder during the iterative decoding process. A
6223319 Turbo code decoder with controlled probability estimate feedback April 24, 2001
A feedback control for a turbo decoder controls the feedback between component decoders by modifying updated a priori probabilities calculated by one component decoder and used as inputs to another component decoder during the decoding process, resulting in a significant performance
6192501 High data rate maximum a posteriori decoder for segmented trellis code words February 20, 2001
In a communications system, a trellis code word is segmented by both the encoder and a segmented MAP decoder. The segmented MAP decoder operates on code word segments as if they were individual code words and takes advantage of knowing the state of the encoder at specified times to reduc
6128765 Maximum A posterior estimator with fast sigma calculator October 3, 2000
Forward and backward recursive calculations in a maximum a posteriori decoding process are performed in parallel processes, rather than sequentially, allowing the a posteriori transition probabilities to be calculated in the same time interval as the recursions, thereby reducing deco
6122015 Method and apparatus for filtering digital television signals September 19, 2000
A system for filtering digital television signals is provided. The system comprises a generator for providing a first data sequence to a private data packetizer, and a transmitter for transmitting the packetized first data sequence in a data channel of a digital television signal. The sy
5903594 Power line communications spread spectrum protocol May 11, 1999
A spread spectrum protocol in a power line communication (PLC) system uses Harmonic Modulation (HM) as true spread spectrum modulation made up of a plurality of modulated tones spaced in frequency with equal distance between adjacent tones. The protocol incorporates the following modes:"










 
 
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