Question

Improving information rate | Which of the following option(s) will improve data rate or throughput over a channel? Select one or more:

a. Use 16-QAM instead of BPSK
b. Encode as many bits onto a symbol and increase the baud rate
c. Reduce the propagation delay between a sender and a receiver
d. Use 2B1Q instead of Manchester
The correct answers are: Encode as many bits onto a symbol and increase the baud rate, Use 16-QAM instead of BPSK, Reduce the propagation delay between a sender and a receiver, Use 2B1Q instead of Manchester

Answer 1

Improving the data rate or throughput over a communication channel can be achieved by switching to modulation techniques like 16-QAM, encoding more bits per symbol, increasing the baud rate, reducing propagation delay, and using more bandwidth-efficient line coding such as 2B1Q.

Step-by-step explanation:

The subject question relates to how one can improve the data rate or throughput over a communication channel. There are several ways to enhance data transmission rates:

• Switching from Binary Phase Shift Keying (BPSK) to 16-Quadrature Amplitude Modulation (16-QAM) increases the number of bits that can be transmitted with each symbol because 16-QAM can encode more bits per symbol compared to BPSK.
• Encoding more bits onto a symbol and increasing the baud rate – which is the rate at which symbols are transmitted over a channel – also improves the throughput. The more bits per symbol, the higher the data rate for a given baud rate.
• Reducing propagation delay, which is the time it takes a signal to travel from the sender to the receiver, means that data can be transmitted more quickly.
• Choosing 2 Binary 1 Quarternary (2B1Q) line coding over Manchester coding also results in higher data rates because 2B1Q is more efficient in how it uses bandwidth.

All of these methods enhance the efficiency and speed of data transmission in different ways.