نتایج جستجو برای: frequency shift
تعداد نتایج: 608559 فیلتر نتایج به سال:
This article introduces a novel frequency-shift chirp spread spectrum (FSCSS) system with index modulation (IM). By using combinations of orthogonal signals for message representation, the proposed FSCSS (FSCSS-IM) is very flexible to design and can achieve much higher data rates than conventional under same bandwidth. The presents optimal detection algorithms, both coherently noncoherently, FS...
Background: shift work may lead to different health problems due to circadian rhythm. The pattern of shift work, forward or backward, and the duration of each shift period may affect complications. This study was designed to assess and compare the health complications of different patterns of shift work in tile industry. Methods: this cross-sectional study was conducted on 203 shift workers in...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید