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A baseband channel or lowpass channel (or system, or network) is a communication channel that can transfer frequencies that are very near zero. [4] Examples are serial cables and local area networks (LANs), as opposed to passband channels such as radio frequency channels and passband filtered wires of the analog telephone network.
OpenBTS (Open Base Transceiver Station) is a software-based GSM access point, allowing standard GSM-compatible mobile phones to be used as SIP endpoints in Voice over IP (VoIP) networks.
The fact that in equivalent baseband models of communication systems, the signal spectrum consists of both negative and positive frequencies, can lead to confusion about bandwidth since they are sometimes referred to only by the positive half, and one will occasionally see expressions such as =, where is the total bandwidth (i.e. the maximum ...
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 manages all the radio functions (all functions that require an antenna); however, this term is generally not used in reference to Wi-Fi and Bluetooth radios.
In telecommunications, the term multiplex baseband has the following meanings: In frequency-division multiplexing , the frequency band occupied by the aggregate of the signals in the line interconnecting the multiplexing and radio or line equipment.
Hauptwerk was copy protected using the HASP USB token (dongle) from Aladdin Knowledge Systems. The USB token was used to control the functionality of the single Hauptwerk program which was licensed in three editions: [16] Free edition – Free download and use without USB token but limited to 1.5GB sample memory and 256 polyphony, stereo output.
Music scheduling systems are employed to sequence music at radio stations. Although these systems were originally implemented by manual index card methods, since the late 1970s they have exploited the efficiency and speed of digital computers. They are essential tools for broadcasting by music radio stations.
IQ imbalance is a performance-limiting issue in the design of a class of radio receivers known as direct conversion receivers. [a] These translate the received radio frequency (RF, or pass-band) signal directly from the carrier frequency to baseband using a single mixing stage.