Patent ID: 8811551

Claim:
A method for supporting wireless communication over a physical channel in a mobile broadband system by estimating a maximum Doppler frequency of signals communicated over said channel, the method comprising: providing an estimate of said channel by a channel estimator; obtaining a channel autocorrelation function of a channel impulse response of said channel; expressing said channel autocorrelation function as a zero order Bessel function; applying Taylor expansion to said zero order Bessel function; performing derivation of said channel autocorrelation function to obtain an estimate of said maximum Doppler frequency; and using said obtained estimate of said maximum Doppler frequency to compensate for a current Doppler effect in a receiver receiving said signals, wherein obtaining an estimate of said maximum Doppler frequency comprises defining said maximum Doppler frequency, D(x), as D(x)=J 0 (x)−a*J 0 (2x)+b*J 0 (3x), wherein a and b are constants and J 0 is the zero order Bessel function and x is 2πf d τ, where τ is a sampling period and f d is the maximum Doppler frequency, and a is approximately 0.1 and b is approximately 0.0074.