Cognitive Techniques Test - 2

1. Which among the following is an objective that influences throughput?

Signal to interference ratio

Bandwidth

Bit error rate

Spectral efficiency

2. The modification of a signal due to extraneous power exhibited by a signal from a nearby channel is called ____

co-channel interference

adjacent channel interference

inter-symbol interference

inter-carrier interference

3. ____ is a measure of good information received.

Throughput

Latency

Bit rate

Data rate

4. Spectral efficiency may be expressed in terms of ____

Hertz

bits per second

Hertz per bit per second

bits per Hertz per second.

5. Which among the following is an objective not dependent on bandwidth?

Throughput

Power

Interference power

Bit error rate

6. Signal to interference plus noise ratio is defined as ____

ratio of noise power to interference power

ratio of signal power to sum of noise and interference power

ratio of interference to noise power

ratio of sum of noise and interference power to signal power

7. ____ is used to reduce inter-symbol interference.

Cosine filter

Root raised sinc filter

Sinc filter

Root raised cosine filter

8. ____ filter is required to form ____ filter.

Two raised sinc filter, one raised cosine filter

Two raised cosine filter, one sinc filter

Two raised cosine filter, one root raised cosine filter

Two root raised cosine filter, one raised cosine filter

9. Which among the following is a simple expression of throughput objective?

R_th=R_sR_b where R_s is symbol rate and R_b is bit rate

R_th=kR_b where R_b is bit rate

R_th=kR_s where R_s is symbol rate

R_th=R_s/R_b where R_s is symbol rate and R_b is bit rate

10. Which among the following is an expression for spectral efficiency?

η=R_sB where R_s is the symbol rate, B is the bandwidth, K is the number of bits per symbol

η=BK where B is the bandwidth

η=\(\frac{Bk}{R_s}\)where R_s is the symbol rate, B is the bandwidth, K is the number of bits per symbol

η=\(\frac{R_sk}{B}\). where R_s is the symbol rate, B is the bandwidth, K is the number of bits per symbol