a receiver correlator structure for an ultra wide bandwidth communication system includes an antenna , a mixer , a bandpass filter , and a convertor . the receiver receives , via the antenna , an ultra wide bandwidth signal comprising a sequence of wavelets of particular shapes and positions , and transmits the received ultra wide bandwidth signal to the mixer . the mixer also receives and mixes with the received ultra wide bandwidth signal a local ultra wide bandwidth signal comprising a sequence of wavelets of particular shapes and positions correlated to the received ultra wide bandwidth signal . the bandpass filter removes the dc components from the mixed signal , and provides the resultant signal to the convertor . the receiver structure eliminates the local ultra wide bandwidth signal ac bias and dc bias terms and 1 / f noise , yet detects long sequences of logical 1 &# 39 ; s and 0 &# 39 ; s , and allows operation with reduced bandwidth convertors .