Low complexity equalizer for radio receiver
First Claim
1. A receiver for use with one or more antennas, the receiver having:
- two or more diverse channels fed by the antenna or antennas, two or more adaptive equalizers, each for equalizing a signal of one of the channels, each equalizer having a set of coefficients, and a coefficient adapter for adapting two or more of the sets of coefficients in a time shared manner, and a combiner for combining the equalized signals, the equalizers being arranged to output two or more equalized signal values in consecutive time slots, by reusing the same coefficients, while new coefficients are being calculated for a different one of the equalizers in each of the consecutive time slots.
5 Assignments
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Accused Products
Abstract
A diversity receiver (60) has two diverse channels fed by the antennas, an adaptive equalizer (20,30) for each channel and a coefficient adapter (40) for adapting two sets of coefficients in a time shared manner for the equalizers. A combiner combines the equalized signals. By sharing one adapter for adapting the coefficients between two or more equalizers, the calculation load can be reduced. This is useful for small mobile terminals powered by battery, for use with GSM or UMTS or other radio networks. It can be applied to any type of equalizer, and using any manner of time sharing. The combiner can exploit any type of diversity between the equalized signals. The equalizers can output two equalized signal values in consecutive time slots, by reusing the same coefficients, while new coefficients are being calculated.
22 Citations
10 Claims
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1. A receiver for use with one or more antennas, the receiver having:
- two or more diverse channels fed by the antenna or antennas, two or more adaptive equalizers, each for equalizing a signal of one of the channels, each equalizer having a set of coefficients, and a coefficient adapter for adapting two or more of the sets of coefficients in a time shared manner, and a combiner for combining the equalized signals, the equalizers being arranged to output two or more equalized signal values in consecutive time slots, by reusing the same coefficients, while new coefficients are being calculated for a different one of the equalizers in each of the consecutive time slots.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
Specification