Patent ID: 8300720

Claim:
A method in an OFDM communications system implementing frequency hopping, comprising: receiving a first pair of OFDM symbols on a first frequency band; receiving a second pair of OFDM symbols on a second frequency band; obtaining a first pair of frequency domain representations of the first pair of OFDM symbols at a pair of pilot tones; obtaining a second pair of frequency domain representations of the second pair of OFDM symbols at the pair of pilot tones; forming a first frequency domain statistic for the first frequency band by multiplying one of the first pair of frequency domain representations with the complex conjugate of the other of the first pair of frequency domain representations; forming a second frequency domain statistic for the second frequency band by multiplying on of the second pair of frequency domain representations with the complex conjugate of the other of the second pair of frequency domain representations; and combining the first frequency domain statistic with the second frequency domain statistic to form a combined frequency domain statistic.