A method for detecting an access code in a receiver that does not require an explicit DC-offset interference correction block, comprising: a) projecting a received signal R onto a subspace orthogonal to the DC; b) projecting the access code Ci onto the subspace; and c) detecting the presence and location of the access code Ci and eliminating any DC offset therein when the frequency offset f0 in the access code Ci is orthogonal to the subspace, and is therefore nulled out.