Patent ID: 8605687

Claim:
A method for estimating interference in a wireless communication network comprising a plurality of wireless Orthogonal Frequency Division Multiplexing/Orthogonal Frequency Division Multiple Access (OFDM/OFDMA) backhaul links, the method comprising: associating each of said wireless OFDM/OFDMA backhaul links with one codeword from a set of Code Division Multiple Access (CDMA) codewords to identify said link; receiving, over a channel of a first one of said wireless OFDM/OFDMA backhaul links associated with an access point, a pilot transmission encoded using a CDMA codeword associated with a second one of said wireless OFDM/OFDMA backhaul links, wherein said encoded pilot transmission is embedded within an OFDMA symbol; decoding said received pilot transmission using said CDMA codeword associated with said second wireless OFDM/OFDMA backhaul link; and estimating interference from said second wireless OFDM/OFDMA backhaul link on said first wireless OFDM/OFDMA backhaul link based on said decoded pilot transmission.