Question

How can bit rate be increased over a cellular phone system? a. improve spectral efficiency by...

How can bit rate be increased over a cellular phone system?

a. improve spectral efficiency by adopting spread spectrum or OFDM techniques

b. increase channel frequency bandwidth

c. implement M’ary modulation techniques

d. all of the above

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Answer #1

How can bit rate be increased over a cellular phone system?

a. improve spectral efficiency by adopting spread spectrum or OFDM techniques

b. increase channel frequency bandwidth

c. implement M’ary modulation techniques

d. all of the above

* An M-ary transmission is a type of digital modulation where instead of transmitting one bit at a time, two or more bits are transmitted simultaneously.

* The relationship of speed to frequency is a bit complex, but in simple terms, higher frequencies are needed to carry more bits of data.

* In OFDM, multiple closely spaced orthogonal subcarrier signals with overlapping spectra are transmitted to carry data in parallel.

By the above points (option 4) all the above is right option.

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