• Thumbnail for Pulse-amplitude modulation
    Pulse-amplitude modulation (PAM) is a form of signal modulation in which the message information is encoded in the amplitude of a pulse train interrupting...
    9 KB (1,020 words) - 11:15, 13 June 2025
  • Pulse-position modulation (PPM) is a form of signal modulation in which M message bits are encoded by transmitting a single pulse in one of 2 M {\displaystyle...
    9 KB (1,242 words) - 04:34, 22 May 2024
  • methods Pulse-amplitude modulation (PAM) Pulse-width modulation (PWM) and pulse-depth modulation (PDM) Pulse-frequency modulation (PFM) Pulse-position...
    24 KB (3,051 words) - 11:37, 29 May 2025
  • Thumbnail for Amplitude modulation
    Amplitude modulation (AM) is a signal modulation technique used in electronic communication, most commonly for transmitting messages with a radio wave...
    36 KB (4,695 words) - 21:34, 31 May 2025
  • Thumbnail for Pulse wave
    a pulse wave. Pulse-amplitude modulation (PAM) encodes information by varying the amplitude. The Fourier series expansion for a rectangular pulse wave...
    6 KB (713 words) - 14:46, 17 May 2025
  • Pulse-density modulation (PDM) is a form of modulation used to represent an analog signal with a binary signal. In a PDM signal, specific amplitude values...
    10 KB (1,449 words) - 20:32, 1 April 2025
  • Thumbnail for Pulse-width modulation
    Pulse-width modulation (PWM), also known as pulse-duration modulation (PDM) or pulse-length modulation (PLM), is any method of representing a signal as...
    29 KB (4,017 words) - 20:51, 8 June 2025
  • onto a pulse train by varying parameters like amplitude (pulse-amplitude modulation - PAM), width (pulse-width modulation - PWM), position (pulse-position...
    17 KB (1,948 words) - 20:29, 2 May 2025
  • Thumbnail for Pulse-frequency modulation
    between pulse trains. Pulse-amplitude modulation Pulse-code modulation Pulse-density modulation Pulse-position modulation Rate coding, pulse-frequency...
    5 KB (554 words) - 22:22, 6 March 2025
  • Quadrature amplitude modulation (QAM) is the name of a family of digital modulation methods and a related family of analog modulation methods widely used...
    15 KB (1,889 words) - 18:27, 29 May 2025
  • Pulse-code modulation (PCM) is a method used to digitally represent analog signals. It is the standard form of digital audio in computers, compact discs...
    34 KB (4,095 words) - 22:48, 24 May 2025
  • Thumbnail for Delta modulation
    delta modulation, there is no limit to the number of pulses of the same sign that may occur, so it is capable of tracking signals of any amplitude without...
    18 KB (2,210 words) - 13:46, 23 May 2025
  • Thumbnail for Return-to-zero
    each bit is a neutral or rest condition, such as a zero amplitude in pulse-amplitude modulation (PAM), zero phase shift in phase-shift keying (PSK), or...
    3 KB (337 words) - 20:23, 19 December 2024
  • Thumbnail for Single-sideband modulation
    radio waves. A refinement of amplitude modulation, it uses transmitter power and bandwidth more efficiently. Amplitude modulation produces an output signal...
    33 KB (4,814 words) - 03:16, 26 May 2025
  • Thumbnail for Delta-sigma modulation
    accuracy in amplitude, which can be ultimately encoded as pulse-code modulation (PCM). Both ADCs and DACs can employ delta-sigma modulation. A delta-sigma...
    59 KB (6,863 words) - 13:32, 25 May 2025
  • Thumbnail for Non-return-to-zero
    each bit is a neutral or rest condition, such as a zero amplitude in pulse-amplitude modulation (PAM), zero phase shift in phase-shift keying (PSK), or...
    13 KB (1,567 words) - 09:42, 29 March 2025
  • Thumbnail for Frequency modulation
    frequency modulation a carrier wave is varied in its instantaneous frequency in proportion to a property, primarily the instantaneous amplitude, of a message...
    31 KB (4,003 words) - 13:29, 24 May 2025
  • Carrierless amplitude phase modulation (CAP) is a variant of quadrature amplitude modulation (QAM). Instead of modulating the amplitude of two carrier...
    4 KB (483 words) - 16:01, 25 April 2024
  • Thumbnail for Line code
    frequency modulation, Miller encoding and delay encoding Non-return-to-zero (NRZ) Non-return-to-zero, inverted (NRZI) Pulse-position modulation (PPM) Return-to-zero...
    16 KB (1,665 words) - 09:31, 4 June 2025
  • corresponds to an infinite time signal, that causes neighboring pulses to overlap. As the modulation rate increases, the signal's bandwidth increases. When the...
    7 KB (964 words) - 18:41, 5 February 2025
  • Amplitude-shift keying (ASK) is a form of amplitude modulation that represents digital data as variations in the amplitude of a carrier wave. In an ASK...
    9 KB (1,641 words) - 16:04, 11 January 2025
  • is the modulation efficiency measured in bit/symbol or bpcu. In the case of baseband transmission (line coding or pulse-amplitude modulation) with a...
    25 KB (2,140 words) - 13:14, 9 April 2025
  • pulse amplitude is the magnitude of a pulse parameter, such as the voltage level, current level, field intensity, or power level. Pulse amplitude is...
    13 KB (1,620 words) - 15:24, 3 June 2025
  • high-bit-rate digital subscriber line (HDSL). 2B1Q is a four-level pulse-amplitude modulation (PAM-4) scheme without redundancy, mapping two bits (2B) into...
    1 KB (146 words) - 15:51, 25 December 2023
  • Thumbnail for Variable-frequency drive
    and are also referred to as variable-voltage inverter drives, pulse-amplitude modulation (PAM) drives, square-wave drives or DC chopper inverter drives...
    66 KB (6,901 words) - 06:51, 13 June 2025
  • Trellis-coded pulse-amplitude modulation (TC-PAM) is the modulation format that is used in HDSL2 and G.SHDSL. It is a variant of trellis coded modulation (TCM)...
    1 KB (114 words) - 09:40, 24 October 2024
  • data using pulse-amplitude modulation with 2 N {\displaystyle 2^{N}} different voltage levels, can transfer N {\displaystyle N} bits per pulse. A digital...
    31 KB (3,457 words) - 01:35, 18 June 2025
  • opposed to other DSL technologies, SHDSL employs trellis-coded pulse-amplitude modulation (TC-PAM). As a baseband transmission scheme, TC-PAM operates at...
    4 KB (624 words) - 08:07, 5 June 2025
  • Thumbnail for GDDR7 SDRAM
    and specifications. GDDR7 SDRAM employs three-level (-1, 0, +1) pulse-amplitude modulation (PAM-3) instead of NRZ in GDDR6 and PAM-4 in GDDR6x. PAM-3 enables...
    7 KB (663 words) - 21:13, 7 March 2025
  • On–off keying (category Quantized radio modulation modes)
    On–off keying (OOK) denotes the simplest form of amplitude-shift keying (ASK) modulation that represents digital data as the presence or absence of a...
    3 KB (296 words) - 22:22, 6 July 2024