Title: Methods and apparatus for pre-filtering a signal to increase signal-to-noise ratio and decorrelate noise
Application Number: 200480033912 Application Date: 2004.11.16
Publication Number: 1883171 Publication Date: 2006.12.20
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04L25/03,H04B7/08
Applicant(s) Name: Ericsson Telefon AB L. M. Address:
Inventor(s) Name: Hafeez Abdulrauf, Arslan Huseyin, Hui Dennis
Attorney & Agent: cheng tianzheng wang zhongzhong
Abstract:
     To receive a signal from a multiple-input-multiple-output (MIMO) communication channel, initial channel taps are generated based on an impulse response estimate of the MIMO communication channel. The received signal is pre-filtered (350) using the initial channel taps to generate output channel taps and a corresponding output signal having an increased signal-to-noise ratio (SNR) and uncorrelated noise. The SNR is based on a ratio of the energy in a first subset of the output channel taps to the energy in a second subset of the output channel taps.
Time: 11