[CDC16] Reception Filter Impact on Widely Linear FRESH Receiver Performance for SAIC/MAIC with Frequency Offsets
Conférence Internationale avec comité de lecture :
IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM),
Mots clés: Widely linear, SAIC/MAIC, Frequency offset, Rectilinear, CCI, Pseudo-MLSE, FRESH, Low-PassFilter
Widely linear (WL) receivers are able to fulfill single antenna
interference cancellation (SAIC) of one rectilinear (R) (ASK,
BPSK) or quasi-rectilinear (QR) (MSK, GMSK, OQAM)
co-channel interference (CCI). In the presence of residual
frequency offsets (FO), standard SAIC/MAIC receivers lose
their efficiency and have to be extended using WL frequency
shifted (FRESH) filtering, which has been done recently.
However, in practice the observations are low-pass filtered
before sampling and processing, which may degrade the performance.
In this context, the purpose of the paper is twofold.
The first one is to extend the previous pseudo MLSE-based
WL FRESH receiver, for sources with differential FO, to
observations which are low-pass filtered. The second one is
to analyze, both analytically and by simulations, the impact
of the low-pass filtering on the performance of the extended
pseudo MLSE-based WL FRESH receiver.