Patent ID: 6807227
Filing Date: 2004-10-19
Classification: H04L

Abstract:
A method of adaptively reconfiguring a radio architecture for power efficient or adaptive communications based on communication channel conditions, suitable for use in a reconfigurable radio which allows control of reconfigurable digital signal processing blocks with adjustable parameters, comprising the steps of:estimating a signal to noise ratio (SNR) and signal-to-interference ration (SIR) based on a channel monitor; estimating a channel impulse response; based on the estimate of the channel impulse response, setting parameters of the reconfigurable digital signal processing blocks to mitigate frequency selective fading, wherein said step of setting parameters of the reconfigurable digital signal processing blocks comprises: determining a delay spread from said channel impulse response by setting a system adjustable threshold over which signal power is not considered in determining a time dispersion of a signal; and setting the number of taps in a decision feedback equalizer (DFE) to the length of the delay spread normalized to a symbol rate; and based on the estimates of SIR and SNR, setting additional parameters of the reconfigurable digital signal processing blocks to mitigate interference, noise and time selective fading.