| 摘要 |
A method of modulating a data signal comprising: differentially binary encoding (s2) the data signal (20) to provide a differentially binary encoded data signal (26); and performing intermediate frequency to radio frequency, RF, conversion (s4) using the differentially binary encoded data signal (26) as both the in-phase, I, input and the quadrature, Q, input to an intermediate frequency to RF converter. Also, a method of demodulating an RF signal; the method comprising: performing RF to intermediate frequency conversion (s6) on a received differentially binary encoded RF signal (84) to provide an in-phase, I, component (86) and a quadrature, Q, component (88); differentially demodulating (s8) the I component (86), and, separately, differentially demodulating (s8) the Q component (88); combining (s10) the differentially demodulated I component (96) and the differentially demodulated Q component (104); and performing clock and data recovery (s12) on the combined differentially demodulated I and Q components (106).
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