The transmission error code performance of square MQAM and star MQAM modulation schemes for the AGWN Rayleigh fading channel is analyzed. The corresponding BER formulas and computer aided numeric results are given. Th...The transmission error code performance of square MQAM and star MQAM modulation schemes for the AGWN Rayleigh fading channel is analyzed. The corresponding BER formulas and computer aided numeric results are given. Therefore it provides a theoretical basis for choosing MQAM modulation schemes in mobile communications.展开更多
The γ ray radiation will speed up the discharge of the stored charge in nonvolatile MNOS structure. The radiation absorption mechanism to enhance the discharge is discussed. A direct radiation emission model from the...The γ ray radiation will speed up the discharge of the stored charge in nonvolatile MNOS structure. The radiation absorption mechanism to enhance the discharge is discussed. A direct radiation emission model from the interface traps distributing both in energy level and in space is given. The theoretical results based on this model are in good agreement with experimental measurement.展开更多
文摘The transmission error code performance of square MQAM and star MQAM modulation schemes for the AGWN Rayleigh fading channel is analyzed. The corresponding BER formulas and computer aided numeric results are given. Therefore it provides a theoretical basis for choosing MQAM modulation schemes in mobile communications.
文摘The γ ray radiation will speed up the discharge of the stored charge in nonvolatile MNOS structure. The radiation absorption mechanism to enhance the discharge is discussed. A direct radiation emission model from the interface traps distributing both in energy level and in space is given. The theoretical results based on this model are in good agreement with experimental measurement.
