—The second-order cyclostationarity of cyclically prefixed single carrier linear digital (CP-SCLD) modulated signals is investigated with emphasis on its applicability to signal recognition. Analytical closed-form expressions for the second-order (one-conjugate) cyclic cumulants (CCs) and the set of cycle frequencies (CFs) for CP-SCLD modulated signals are derived. Based on these results, an algorithm is proposed for the recognition of CP-SCLD against SCLD and orthogonal frequency division multiplexing (OFDM) signals. This algorithm obviates the need for signal pre-processing tasks, such as symbol timing, carrier and waveformrecovery and estimation ofsignalandnoisepowers.
Octavia A. Dobre, Qiyun Zhang, Sreeraman Rajan, Ro