Performance of a Medium-wave Radio Transmitter Using Hybrid Modulation.
نویسندگان
چکیده
منابع مشابه
Adaptive Modulation for Transmitter Antenna Diversity Mobile Radio Systems
Adaptive transmission techniques such as adaptive modulation and transmitter antenna diversity have been proposed for mobile wireless systems to satisfy high data-rate service requirements. In rapidly time variant channels, these methods need the knowledge of future fading conditions and therefore require accurate long range fading prediction. We investigate three combined adaptive modulation...
متن کاملCombined adaptive modulation and transmitter diversity using long range prediction for flat fading mobile radio channels
Development of novel signal processing and communication techniques for 3G wireless systems is motivated by high data rate service requirements. These techniques include adaptive modulation and transmitter antenna diversity. In rapidly time variant channels, these methods need the knowledge of future fading conditions. Thus, they require accurate long range fading prediction. We investigate thr...
متن کاملFading-resistant modulation using several transmitter antennas
This paper proposes a bandwidth-eecient fading-resistant transmission scheme which implements transmitter diversity using L antennas at the base station. When the antennas are spaced suuciently far apart, the transmission from each antenna undergoes a diierent degree of fading. These transmissions are coordinated to mitigate the eeects of Rayleigh fading and the mobile receiver can recover the ...
متن کاملUsing WPT as a New Method Instead of FFT for Improving the Performance of OFDM Modulation
Orthogonal frequency division multiplexing (OFDM) is used in order to provide immunity against very hostile multipath channels in many modern communication systems.. The OFDM technique divides the total available frequency bandwidth into several narrow bands. In conventional OFDM, FFT algorithm is used to provide orthogonal subcarriers. Intersymbol interference (ISI) and intercarrier interferen...
متن کاملAnalysis of Wave Motion in a Micropolar Transversely Isotropic Medium
The present investigation deals with the propagation of waves in a micropolar transversely isotropic layer. Secular equations for symmetric and skew-symmetric modes of wave propagation in completely separate terms are derived. The amplitudes of displacements and microrotation were also obtained. Finally, the numerical solution was carried out for aluminium epoxy material and the dispersion curv...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of the Institute of Television Engineers of Japan
سال: 1994
ISSN: 0386-6831,1884-9652
DOI: 10.3169/itej1978.48.708