Range of frequencies occupied by an unmodulated signal
Spectrum of a baseband signal, energy E per unit frequency as a function of frequency f. The total energy is the area under the curve.
In telecommunications and signal processing, baseband is the range of frequencies occupied by a signal that has not been modulated to higher frequencies.[1] Baseband signals typically originate from transducers, converting some other variable into an electrical signal. For example, the electronic output of a microphone is a baseband signal that is analogous to the applied voice audio. In conventional analog radio broadcasting, the baseband audio signal is used to modulate an RF carrier signal of a much higher frequency.
A baseband signal may have frequency components going all the way down to the DC bias, or at least it will have a high ratio bandwidth. A modulated baseband signal is called a passband signal. This occupies a higher range of frequencies and has a lower ratio and fractional bandwidth.
^Jeff Rutenbeck, Tech Terms: What Every Telecommunications and Digital Media Professional Should Know, p. 24, CRC Press, 2012 ISBN 1136034501
signal processing, baseband is the range of frequencies occupied by a signal that has not been modulated to higher frequencies. Baseband signals typically...
A baseband processor (also known as baseband radio processor, BP, or BBP) is a device (a chip or part of a chip) in a network interface controller that...
In telecommunication, the term multiplex baseband has the following meanings: In frequency-division multiplexing, the frequency band occupied by the aggregate...
both baseband and passband bit-stream components are considered part of a digital signal; an alternative definition considers only the baseband signal...
The lower frequency band occupied by the modulation signal is called the baseband, while the higher frequency band occupied by the modulated carrier is called...
Composite video is an baseband analog video format that typically carries a 525 or 625 line interlaced signal on a single channel, unlike the higher-quality...
current (often using differential signaling). the line-coded signal (the baseband signal) undergoes further pulse shaping (to reduce its frequency bandwidth)...
phase remain constant. If the information to be transmitted (i.e., the baseband signal) is x m ( t ) {\displaystyle x_{m}(t)} and the sinusoidal carrier...
Base Band 5, abbreviated as BB5, is the mobile baseband generation implemented on Nokia mobile phones and the replacement for prior DCT (Digital Core Technology)...
context it is an upper bound for the symbol rate across a bandwidth-limited baseband channel such as a telegraph line or passband channel such as a limited...
recovered from the samples. The first and third graphs of Figure 1 depict a baseband spectrum before and after being sampled at a rate that completely separates...
is also modulated so that it occupies higher frequencies (compared to a baseband signal which is bound to the lowest end of the spectrum, see line coding)...
IF amplifier. In zero-IF systems, it is derived in the baseband signal chain, before the baseband amplifier. RSSI output is often a DC analog level. It...
unit (MAU) and baseband medium, type 10BASE-T including type 10BASE-Te IEEE 802.3 25. Physical Medium Dependent (PMD) sublayer and baseband medium, type...
MSM Interface is a proprietary interface for interacting with Qualcomm baseband processors and is a replacement for the legacy cellular extensions of the...
port connections) and TCS (Telephony control protocol) interact with the baseband controller through the L2CAP (Logical Link Control and Adaptation Protocol)...
release of the iPhone 4s, Apple updated baseband hardware from an Infineon Baseband chip to a Toshiba Baseband chip in week 2 production in 2011 which...
frequency modulation. In phase modulation, the instantaneous amplitude of the baseband signal modifies the phase of the carrier signal keeping its amplitude and...
equipment is remote to baseband units such as BTS/NodeB/eNodeB/gNodeB or gNB. This equipment is used to extend the coverage of a baseband unit in challenging...
10 refers to its transmission speed of 10 Mbit/s. The BASE is short for baseband signaling (as opposed to broadband), and the 5 stands for the maximum segment...
energy only in a passband), is known as a bandpass signal, in contrast to a baseband signal. The bandpass filter usually has two band-stop filters. In telecommunications...
4G LTE baseband in volume in the second half of 2014, later than its largest competitor Qualcomm. The additional cost of the separate baseband chip required...
improvement in the signal-to-noise ratio of the high-frequency portion of the baseband, i.e., modulating signal, which improvement results from passing the modulating...
bit/symbol or bpcu. In the case of baseband transmission (line coding or pulse-amplitude modulation) with a baseband bandwidth (or upper cut-off frequency)...
frequency domain. Convolution between a baseband signal and a unity gain pure carrier frequency shifts the baseband spectrum in frequency and halves its...
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