Time-hopping

Passband modulation
Analog modulation
AM FM PM QAM SM SSB
Digital modulation
ASK APSK CPM FSK MFSK MSK OOK PPM PSK QAM SC-FDE TCM WDM
Hierarchical modulation
QAM WDM
Spread spectrum
CSS DSSS FHSS THSS
See also
Capacity-approaching codes Demodulation Line coding Modem AnM PoM PAM PCM PDM PWM ΔΣM OFDM FDM Multiplexing
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Multiplexing
Analog modulation
AM FM PM QAM SM SSB
Circuit mode (constant bandwidth)
TDM FDM / WDM SDMA Polarization Spatial OAM
Statistical multiplexing (variable bandwidth)
Packet switching Dynamic TDMA FHSS DSSS OFDMA SC-FDM MC-SS
Related topics
Channel access methods Medium access control
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Time-hopping (TH) is a communications signal technique which can be used to achieve anti-jamming (AJ) or low probability of intercept (LPI). It can also refer to pulse-position modulation, which in its simplest form employs 2^k discrete pulses (referring to the unique positions of the pulse within the transmission window) to transmit k bit(s) per pulse.