A method involves modulation of polarization states at a radio network's transmit antennas and configuration of complementary polarization states at the radio network's receiving antennas such that variations in measured voltages at receivers' antennas convey digital information and provide a multiple access channel to supplement other network communications. A calibration interval may be used, during which the network receivers measure the two distinct voltages from each transmitter during separate time intervals. Each receiver keeps a separate accumulation for each transmitter wherein each received sample is weighted by +1 or −1 according to the column of a Hadamard matrix. After the sample periods and accumulations have been completed, each receiver offsets its accumulation using a normalization term. Each receiver may then decode bits received from each transmitter using the offset completed sum for each respective transmitter.