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
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
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
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
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
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
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
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
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
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
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
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
Line code (redirect from Baseband modulation)
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
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
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
Spectral efficiency (redirect from Modulation efficiency)
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
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
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
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
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
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
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
TC-PAM (redirect from Trellis-coded pulse amplitude modulation)
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
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
difference, or phase shift, from pulse to pulse. This causes the reflector to produce Doppler modulation on the reflected signal. Pulse-Doppler radars exploit this...
33 KB (4,372 words) - 14:49, 30 October 2024