Direct sequence spread spectrum (DSSS) signals are widely used in various military and
civilian communication systems. It adopts the pseudorandom (PN) sequence to modulate …

Modulation recognition becomes unreliable at low signal-to-noise ratio (SNR) over fading
channel. A novel method is proposed to recognize the digital modulated signals with …

The issue of frequency offset in low data rate, narrowband and low power communication
nodes is considered in this paper. To avoid power hungry precise frequency generation …

This paper presents a novel blind frequency offset estimator for coherent M-PSK systems in
an autonomous radio. The proposed estimator is based on the spectrum of the signal's …

Fundamental to all communication systems is the process of modulation, which maps the
information to physical signals. In digital modulation, the information bits are mapped to a …

In wireless communication, the frequency offset is a problem that hinders the
communication. It arises from the discrepancy between the frequencies of the oscillator of …

We address the issue of blind estimation of frequency offset for coherent M-ary phase shift
keying (M-PSK) systems. An estimator is introduced, which is based on spectrum analysis of …