| 摘要 |
<p>A bandwidth control of sideband energy and compression method applied to theinteger cycle methods of modulation, is now disclosed called X padding. RadioFrequency (RF) sine waves are grouped into frames of N cycles (divide-by ratio)where N is a variable power of 2 (i.e. 2, 4, 8, 16, 32, 64, 128, 256, 512, etc). Thissystem is flexible wherein N can equal any one of these values. In the frame of Ncycles, two alternate cycles are changed to the modulating frequencies. Theother cycles remain precisely at the carrier frequency. The position of the alternatemodulated cycles in a frame of N-cycles determines the exact binary bits thatare being transmitted. This means that by sending only one modulation event whereN =16, four (4) bits are transferred. For example, in a frame of 16 cycles (i.e.N =16) where the positions of the alternate modulated cycle is 6, then the fourbinary bits of information transmitted are 0110. X padding is used to set the pulserepetition rate to fit particular Power S pectrum Density (PSD) needs. This isdone by inserting X number of un-modulated RF cycles to the beginning and to theend of the N Frame.</p> |
