Frame format and method for adaptive equalization within an inte

Details Frame format and method for adaptive equalization within an inte Frame format and method for adaptive equalization within an inte

1996-05-10

1999-04-06

Ghebretinsae, Temesghen

Pulse or digital communications

Equalizers

Automatic

3647242, H03H 730

Patent

active

058927964

ABSTRACT:
The function addressed is that of adaptive equalization to mitigate the effects of multiple path radio propagation in the context of point-to-multipoint, time division duplexed microwave radio systems. Without this equalization, fading and intersymbol interference degrades the accuracy of the recovered bit stream. This degradation of the received signal is caused by the vector sum of multiple copies of the transmitted signal arriving with various time offsets and amplitudes. The method employed uses a single training symbol per frame common for all time division multiplexed derived channels rather than one for each channel and for both up and down directions. Compensation is applied at each station transmitter rather than separately equalizing each received signal at the common receiver.

REFERENCES:
patent: 5559723 (1996-09-01), Mourot et al.

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