BPSK vs $\pi/2$ BPSK, what the benefits?

1. What is pi 2 BPSK?
2. Which is more efficient BPSK or QPSK?
3. Why is QPSK and BPSK the same?
4. What is BPSK modulation technique?

What is pi 2 BPSK?

Accordingly, pi/2 BPSK is used for the signal modulation scheme. Two bits of information to be communicated are subjected to pi/2 BPSK modulation at a time. This modulation generates two corresponding complex-valued symbols. For in-phase operation, each of the two symbols is selected from the same candidate set.

Which is more efficient BPSK or QPSK?

In comparison to OOK and BPSK, QPSK enables the data rate to be doubled while keeping the same bandwidth, meaning it's also possible to stay at the same data rate at half the bandwidth, with the same bit error ratio (BER). So QPSK is suitable for data rates of 100 Gbps as well.

Why is QPSK and BPSK the same?

The probability of error is identical for BPSK and QPSK because the BER has been measured in terms of signal to noise ratio per bit.

What is BPSK modulation technique?

Binary Phase-shift keying (BPSK) is a digital modulation scheme that conveys data by changing, or modulating, two different phases of a reference signal (the carrier wave). The constellation points chosen are usually positioned with uniform angular spacing around a circle.