Opportunistic spectrum access to radar bands by a cognitive radio based secondary user has
been recognized as an effective means to enhance the spectral utilization of the bands. A …

Recently, radar frequency bands have been drawing much attention as possible candidates
for cognitive radio, since their utilization was revealed to be relatively low. One important …

Importance Ovarian cancer has the highest mortality rate among gynecologic malignant
tumors. Data are lacking on the survival benefit of hyperthermic intraperitoneal chemotherapy (…

For cooperative spectrum sensing, multiple secondary users are required to deliver their
local decisions to a fusion centre through a report channel. A resource‐efficient transmission …

Radar frequency bands are known to be relatively wide and underutilized, potentially allowing
for higher spectral usage by means of the cognitive radio technology. One of the most …

An adaptive double-dwell acquisition system of pseudo-noise (PN) sequences is presented
for direct-sequence spread-spectrum (DS-SS) systems. Since existing acquisition systems …

A pulse radar signal exhibits periodic appearance of pulses in time. So it leads to a high
correlation between two samples separated in time by multiples of its period. In this paper, we …

A sliding window-based spectrum sensing method determines the presence or absence of
a primary user by comparing the maximum of the received signal energies from multiple …

Goldsmith (see IEEE Trans. Commun., vol.45, p.1218-30, 1997) proposed an adaptive rate
MQAM with variable power for a higher transmission rate in a fading channel. However, its …

Context. Certain periodic variations of radial velocities (RVs) of wobbling giants originate
from exoplanets. A number of exoplanets have been discovered around giant stars.Aims. The …