Sidelobe Suppression for OFDM-based Cognitive Radios in DSA Environment Rakesh Rajbanshi (firstname.lastname@example.org), Srikanth Pagadarai (email@example.com), Alexander Wyglinski (firstname.lastname@example.org). Introduction. Proposed Sidelobe Suppression Technique.
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Sidelobe Suppression for OFDM-basedCognitive Radios in DSA EnvironmentRakesh Rajbanshi (email@example.com), Srikanth Pagadarai (firstname.lastname@example.org), Alexander Wyglinski (email@example.com)
Proposed Sidelobe Suppression Technique
Fig.1: Schematic of secondary users operating in
the presence of primary users in frequency domain
Fig.3: An illustration of inserting cancellation
carriers for sidelobe suppression
Fig. 2(a) OFDM transmitter with sidelobe
Fig. 2(b) OFDM receiver with sidelobe
Fig.4: Normalized power spectrum
for BPSK-OFDM with 4 CCs
Fig.5: CCDF plot of the out-of-band radiation
For BPSK-OFDM with 4 CCs for sub-optimal cases
Fig.6: Normalized power spectrum for BPSK/OFDM with 4 CCs in a spectrum sharing scenario
with equal spacing between the unused portions of the spectrum