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Ayyoob D. Abbaszadeh Patents |
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Inventor: Abbaszadeh; Ayyoob D.
Address: Salt Lake City, UT
No. of patents: 3
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 6370201 |
Simplified branch metric calculation in pragmatic trellis decoders |
April 9, 2002 |
| A method of branch metric calculation of trellis coded data, suitable for a decoder of phase angle on a carrier modulated with phase shift keying (PSK) modulation, begins with an expressing angles of phase shift by a vectorial representation of sectors within quadrants of a circle. The |
| 6304614 |
Differential codec for pragmatic PSK TCM schemes |
October 16, 2001 |
| A system including coding and decoding circuits provides for resolution of the phase ambiguities in pragmatic trellis-coded PSK modulation transmissions. An error correcting coder, such as a convolutional encoder, precedes the modulator for reducing the effect of noise in inducing phase |
| 4901317 |
Efficient maximum-likelihood decoder for the golay (24,12) code |
February 13, 1990 |
| A novel maximum likeihood decoder for the Golay (24,12) code is provided. Instead of decoding the received dimensional vector (X) is a systolic array, the vector is mapped into a (24,5) subcode with an index 128 which is easily decoded. The decoder employs a plurality of precomputational |
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