Tradeoff Between Processing Gain and Interference Immunity in Co-Site Multichannel Spread-Spectrum Communications

Multiple single channel spread-spectrum radio communications simultaneously transmitted and received at a small station, aircraft, or ship are subject to mutual interference. Wide-band PN and/or FH radios which occupy a large fraction of the available frequency band are more difficult to protect from adjacent channel interference than conventional narrow-band radios. This paper describes the interference susceptibility of various spread-spectrum radios, identifies potential solutions, and determines the tradeoff of processing gain that must be made to achieve immunity from co-site interference.