Method for a receiver unit to determine a quality value for a re

Details Method for a receiver unit to determine a quality value for a re Method for a receiver unit to determine a quality value for a re

1997-06-05

1999-12-14

Vo, Don N.

Pulse or digital communications

Testing

Signal noise

375346, 455 673, 455 63, 4552261, H04B 1700, H04B 346, H04Q 120

Patent

active

060027150

ABSTRACT:
A received signal (310) includes information symbols ("D's") including equidistant symbols that are equidistant from the origin of a complex plane. The D's and corresponding interference signals ("I's") are formed (403) and the quantity of equidistant symbols determined (407). A desired signal portion average is based (409) on the received signal. When the quantity of equidistant symbols exceeds a threshold, an undesired signal portion average is based (413) exclusively on the I's corresponding to the equidistant symbols. Otherwise, the undesired signal portion average is based (423) on the I's corresponding to all received D's, including the equidistant symbols. A received signal quality value is then based on a ratio of the desired signal portion average and the undesired signal portion average.

REFERENCES:
patent: 5440590 (1995-08-01), Birchler et al.
patent: 5726978 (1998-03-01), Frodigh et al.
patent: 5812600 (1998-09-01), Hess et al.
patent: 5898730 (1999-04-01), Hensley et al.

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