TDMA, FDMA, and CDMA

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C x x(t) s(t) CODING Band of the original signal Direct Sequence Spread Spectrum frequency band of the coded signal frequency 28
Direct Sequence Spread Spectrum Original signal (band related to the bit rate) Spreading sequence composed by chips, with chip rate >> bit rate Coded signal (band related to the chip rate) 29
Page 1 and 2: TDMA, FDMA, and CDMA Telecomunicazi
Page 3 and 4: TDMA : Frame Structure TDMA require
Page 5 and 6: TDMA : guard times Since there are
Page 7 and 8: S Digital signal TDMA: reference tr
Page 9 and 10: () j s () t 1 0.8 0.6 0.4 0.2 0 -0.
Page 11 and 12: from the buffer () () t j sC Code g
Page 13 and 14: from the TDMA coder 1 0.8 0.6 0.4 0
Page 15 and 16: 100 50 0 -50 -100 () () t j sTX 0 0
Page 17 and 18: Frequency requency Division ivision
Page 19 and 20: S Digital signal FDMA: reference sc
Page 21 and 22: s FDMA: a case study () j () () j
Page 23 and 24: TDMA + FDMA FDMA TDMA + FDMA 23
Page 25 and 26: Code ode Division ivision Multiple
Page 27: CDMA schemes Direct Sequence CDMA (
Page 31 and 32: Received signal signal 1 Direct Seq
Page 33 and 34: Frequency Hopping Spread Spectrum T
Page 35 and 36: Frequency Hopping Spread Spectrum C
Page 37 and 38: CDMA : the near-far problem If all
Page 39 and 40: DS-CDMA: reference scheme Front-End
Page 41 and 42: s DS-CDMA: a case study s Digital b

TDMA, FDMA, and CDMA

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