Telecommunications companies eyeing to get a part of the
forth coming licensing regime in the 38 Gega Hertz (GHz) and 48 GHz spectrum
bands, should be able to deploy Frequency-division duplex (FDD) technologies,
reports ITRealms.
The Deputy Director, Spectrum
Administration Department at NCC, Engr. O.A. Yusuf made this disclosure while
responding to questions during a one-day Stakeholders Consultative Forum on
Licensing of 38 GHz and 42 GHz spectrum bands as well as re-planning of 23 GHz
band in Lagos.
He stressed the
purpose of the forum, saying that participants were to discuss spectrum plan,
pricing scheme and licensing of service providers in the bands on offer in
addition to re-planning of 23GHz Microwave Spectrum bands within the
Nigerian telecoms industry in line with the global best practices.
Yusuf further asserted that the new frontier is broadband
and in effort to ensure Nigeria take full advantage of the new licensing
regimes available, and across channel plan, licensing model and pricing.
ITRealms recalls that FDD, is a telecommunications duplex
indexing method which means that the transmitter and receiver operate at
different carrier frequencies. The term is frequently used in ham radio
operation, where an operator is attempting to contact a repeater station.
The
station, experts explained, must be able to send and receive a transmission at the same time, and
does so by slightly altering the frequency at which it sends and receives. This
mode of operation is referred to as duplex mode or offset mode.
Experts at Wikipedia said that uplink and downlink sub-bands
are usually separated by the frequency offset. Thus, frequency-division
duplexing could be efficient in the case of symmetric traffic.
In this case, they explained, time-division duplexing tends
to waste bandwidth during the switch-over from transmitting to receiving, and
has greater inherent latency, and may require more complex circuitry.
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