Patent ID: 8095096

Claim:
Apparatus for a radio receiver employing a first diversity antenna that develops a first electrical energy signal from an electromagnetic signal comprising data modulated thereon and a second diversity antenna that develops a second electrical energy signal from the electromagnetic signal, comprising: a first legacy demodulator coupled to the first diversity antenna; a second legacy demodulator coupled to the second diversity antenna; a diversity demodulator coupled to both the first diversity antenna and the second diversity antenna; an amplitude difference calculator coupled to both the first diversity antenna and the second diversity antenna; a correlation detector coupled to both the first diversity antenna and the second diversity antenna; and a demodulator selector accepting a representation of an amplitude difference between the first electrical energy signal and the second electrical energy signal from said amplitude difference calculator and determining whether said representation of an amplitude difference is less than an amplitude threshold, accepting a representation of correlation between the first electrical energy signal and the second electrical energy signal from said correlation detector when said representation of an amplitude difference is less than said amplitude threshold and determining whether said representation of correlation is less than a correlation threshold, and selecting said diversity demodulator to demodulate the modulated data when said representation of correlation is less than said correlation threshold.