0
If 24 voice signals are to be multiplexed and transmitted over twisted pair what is the total bandwidth required if frequency division is used?
Wiki User
∙ 12y ago
The system needs 8000 frames per second to maintain 24 simultaneous voice channels. Each frame is 193 bits in length (24 X 8 bits per channel + 1 control bit= 193 bits). 8000 frames per second is multiplied by 193 bits per frame which yields a rate of 1.544Mbps
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Which multiplexing technique transmits digital signal?
In analog transmission, signals are commonly multiplexed using frequency-division multiplexing (FDM)
What is a tdma?
Time Division Multiple Access. Or even Time Division Multiplexed Access.
What is frequency domain modulation?
Do you mean FDM or Frequency Division Multiplexing? If so, FDM is the division of a high frequency carrier into separate non-overlaping bands to be modulated by separate inputs. It's the modulation of several low frequency channels onto a high frequency carrier. Voice channels are low bandwidth inputs relative to the broadband carrier used to broadcast them.
What are the CDMA bands?
CDMA-(code division multiple access), uses spread spectrum technique, which spreads the bandwidth of the data uniformly for the same transmitted power.(surce:wikipedia)
Which component translates a synchronous serial connection to time division multiplexed connection?
The router.
Name the various types of multiplexing techniques?
Multiplexing techniques vary widely based on what is being multiplexed. Modern telecommunications use a very wide array of techniques including: TDM - examples: TDMA, T-carrier FDM - examples: DWDM Spatial - example: MIMO Code division - examples: CDMA Phase or polarization division - cable/satellite TV Statistcal - examples: packet mode (STS), FHSS etc etc. This is far from a complete list. I think the question needs to be more specific.
What is multiplexing why is multiplexing needed in electronics communication?
multiplexing refeers to the transmission of different signals in the same channel simultaneously. There are many forms of multiplexing that can be used, including frequency division multiplexing(FDM) where individual signals are transmitted over adjacent , non overlapping frequency bands. they are transmitted in parallel and simultaneously in time. In time division multiplexing(TDM) each signal is allowd to use the whole bandwidth for a certain period of time. Multiplexing is needed so that the available channel can be used efficiently and also to save costs. There is too much to know about multiplexing, here is just a short overview. One thing that one has to know is multiple access.
What is mean by orthogonal frequency code division multiplexing in wireless communication?
Orthogonal frequency division multiplexing is special case of frequency division multiplexing where a ling serial data streams are divided into parallel data streams and each data stream is multiplied either by orthogonal frequency or code. when multiplied by code known as frequency code division multiplexing and when multiplied by orthogonal frequency then know as orthogonal frequency division multiplexing
Which of the three multiplexing techniques arre used to combine digital signals?
Frequency-division multiplexing, wavelength-division multiplexing, and time-division multiplexing.
What is 'ofdm'?
Orthogonal frequency-division multiplexing
Comparison between fdm tdm?
FDM-Frequency division multiplexing where as TDM mean Time division multiplexing.In FDM spectrum is divided into frequency whereas in TDM divided into time slot.FDM is used in 1st generation analog system whereas TDM is used in 2nd generation analog system.
What prevents multiple wireless transmissions from colliding?
This topic requires a significant knowledge of how radio frequency communications works, both digital and strictly analog. However, in a nutshell signals are multiplexed by frequency, amplitude, phase, time or code division multiplexing. Signals can and still do collide in some systems such as the Aloha system which originally used cab radios for transmission all operating at the same frequency. If two parties recognized a collision they would each back off a random time and retry.
