Multicarrier system with multiple null subcarriers in transmitted signal due to variable receive bandwidths and the resulting multiple potential dc subcarriers

摘要

Multicarrier system with variable bandwidth communication. If different receivers have different bandwidth allocations, the different receivers will have dc subcarriers at different locations. The positions of the dc subcarriers will also change with changes in the receive bandwidth. The transmitter transmits over the whole bandwidth and does not transmit data on any subcarrier which could potentially be a dc subcarrier of one of the receivers.