Method and apparatus for reducing multipath distortion in a wirless LAN system
AssigneeSarnoff Corporation
InventorsRobert Conrad Malkemes, Henry Sedwick Miller, Charles Reed JR.
Life of this patent
Estimating the term…
Abstract
A spatial diversity combiner comprises a plurality of feed forward equalizers (FFEs), a decision feedback equalizer (DFE), and a tap control circuit. The plurality of FFEs receive spatially diverse replicas of an RF signal and optimally combine them. The DFE provides feedback for tap weight control and optimal equalization of the transmission channel. Symbol error is generated by a slicer circuit or by a maximum likelihood sequence estimation (MLSE) process.
Claims13
A computer readable storage medium containing a program that, when executed upon a computer system, causes the a receiver to perform a method of receiving a radio frequency (RF) signal comprising:
- receiving a plurality of spatially diverse replicas of the RF signal;
- adaptively combining the plurality of spatially diverse replicas to generate an equalized RF signal.
An apparatus for receiving a radio frequency (RF) signal comprising:
- a front end for receiving spatially diverse replicas of the RF signal, selecting the RF signal from a frequency band, and digitizing the selected RF signal;
- and
- an integrated circuit comprising means for adaptively combining the spatially diverse replicas of the selected RF signal to generate an equalized RF signal.
An apparatus for receiving a radio frequency (RF) signal comprising:
- a front end for receiving spatially diverse replicas of the RF signal, selecting the RF signal from a frequency band, and digitizing the selected RF signal;
- and
- a digital signal processor comprising means for adaptively combining the spatially diverse replicas of the RF signal to generate an equalized RF signal.
Dependencies are inferred from the claim text.