baseband


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baseband

[′bās‚band]
(communications)
The band of frequencies occupied by all transmitted signals used to modulate the radio wave.

baseband

A transmission medium through which digital signals are sent without frequency shifting. In general, only one communication channel is available at any given time.

Ethernet is an example of a baseband network.

See also broadband.

baseband

Electronic data in their original form. Baseband refers to analog or digital data before being intermixed with other data. See multiplexing and modulation.

For Example
The output of an analog microphone is baseband. When an FM station's carrier frequency is stripped away in the radio (demodulated), the original audio signal that you hear is the baseband signal. See frequency modulation.

Ethernet transmission is considered baseband, because signals are not intermixed and occupy the full bandwidth of the line. In fact, "base" is part of the Ethernet version name (see 10Base-T and 100Base-T).

When a compressed digital audio signal such as MP3 is transcoded to another format, it is decompressed back to the original bit rate (the baseband signal) before it is compressed into the new format (for a specific example, see aptX). See baseband processor.


Baseband Video
In this cable TV set-top box manual, "baseband video" refers to the composite video signal from an analog VCR or camcorder, which comprises only video frames not intermixed with the audio. See composite video and carrier frequency.
References in periodicals archive ?
Stuart Robinson, Executive Director of the Strategy Analytics Handset Component Technologies (HCT) service notes, "Strategy Analytics estimates Spreadtrum overtook MediaTek to capture the number two spot in the global 3G baseband market in Q1 2015, partly helped by market leaders Qualcomm and MediaTek's shift in focus from 3G to 4G.
Broadcom continued to improve its product-mix and ranked number four in the cellular baseband market in 1H 2012.
According to Stuart Robinson, Director, Strategy Analytics Handset Component Technologies (HCT) service, "Qualcomm is well-positioned to make significant share gains in the emerging LTE baseband market in 2012.
According to Stuart Robinson, Director of the Strategy Analytics Handset Component Technologies service, " MediaTek is now quickly establishing itself as a strong number two to Qualcomm in the baseband market.
Robinson continued, "Strategy Analytics estimates that LTE baseband shipments accounted for less than one-tenth of one percent of total baseband shipments in 2010 and was dominated by single-mode OEM-branded solutions.
According to Stuart Robinson, Director of the Strategy Analytics Handset Component Technologies service, "Strategy Analytics calculates that revenue from baseband-integrated applications processors represented over 60 percent of total baseband revenue in 2013, up from 48 percent in 2012.
He added, "Strategy Analytics estimates that Broadcom and Spreadtrum together accounted for 12 percent of GSM/GPRS/EDGE baseband shipments in Q3 2010, up from just 7 percent in Q3 2009.
According to Sravan Kundojjala, Senior Analyst, "Qualcomm's LTE and LTE-Advanced basebands gained strong traction and propelled its share to a record 63 percent in the cellular baseband market in Q2 2013.
According to Stuart Robinson, Director of the Handset Component technologies service at Strategy Analytics, "The cellular baseband market continues to show strength.
According to this Strategy Analytics report, Qualcomm, Intel, MediaTek, ST-Ericsson, and Spreadtrum captured the top-five revenue share ranking positions in the cellular baseband processor market in Q1 2013.
BOSTON -- The cellular baseband processor market recovered well in the second half of 2009, as described in the latest report, "BASEBAND Market Share Tracker: Qualcomm Extends Revenue Share Lead," from the Strategy Analytics Baseband Quarterly Metrics service module.
19, 2013 /PRNewswire/ -- For the calendar year 2012 the global cellular baseband processor market registered a healthy 18 percent year-on-year growth to reach $17.