FM-UWB is a modulation scheme using double
FM: low-modulation index digital
FSK followed by high-modulation index analog FM to create a
constant envelope
Constant envelope is achieved when a sinusoidal waveform reaches equilibrium in a specific system. This happens when negative feedback in a control system, such as in radio automatic gain control or when an amplifier reaches steady state. Ste ...
UWB signal.
FDMA techniques at the subcarrier level may be exploited to accommodate multiple users. The system is intended for low (10–50
kbit/s
In telecommunications, data transfer rate is the average number of bits ( bitrate), characters or symbols ( baudrate), or data blocks per unit time passing through a communication link in a data-transmission system. Common data rate units are mu ...
) and medium (50–250 kbit/s) bit rate, and short-range WPAN systems. The technology, developed at
CSEM, is paving the way for true low-power
LDR-UWB communication devices. FM-UWB is an optional mode in the IEEE802.15.6 Body Area Network (BAN) standard.
See also
*
UWB Forum
*
WiMedia Alliance
*
Wireless
Wireless communication (or just wireless, when the context allows) is the transfer of information (''telecommunication'') between two or more points without the use of an electrical conductor, optical fiber or other continuous guided transm ...
References
*
* {{cite web
, title=A short range, low data rate, 7.2–7.7 GHz FM-UWB transceiver prototype
, website=CSEM
, place=Neuchâtel, Switzerland
, url=http://www.csem.ch/docs/Show.aspx?id=9392
, url-status=dead
, access-date=2021-01-15
, archive-date=2012-02-27
, archive-url=https://web.archive.org/web/20120227063538/http://www.csem.ch/docs/Show.aspx?id=9392
External links
CSEM FM-UWB proposal for IEEE802.15 TG6 Medical BAN
Radio modulation modes