Издательство: | Книга по требованию |
Дата выхода: | июль 2011 |
ISBN: | 978-6-1346-0156-6 |
Объём: | 76 страниц |
Масса: | 135 г |
Размеры(В x Ш x Т), см: | 23 x 16 x 1 |
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. C-UWB is an acronym for Continuous Pulse Ultra-wideband technology. C-UWB derives its UWB bandwidth by virtue of the short time duration of the individual pulses. Information can be imparted (modulated) on UWB signals (pulses) by encoding the polarity of the pulse, the amplitude of the pulse, and/or also by using orthogonal pulse shape modulation. Polarity modulation is analogous to BPSK in conventional RF technology. In orthogonal wave shape modulation two orthogonal UWB pulse shapes are employed. These are further polarity modulated in a fashion analogous to QPSK in convention radio technology. Preferably, the modulating data bits are scrambled or "whitened" to randomize the occurrences of ones and zeros. The pulses are send contiguously as a continuous stream, hence the bit rate can equal the pulse rate.
Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.