Samples per symbol and number of symbols for QAM

1. What is sample per symbol?
2. How many bits per symbol transmitted in 16-QAM?
3. How do you calculate bits per symbol?
4. What is the symbol rate for 256 QAM?

What is sample per symbol?

Samples per symbol determine the acquisition bandwidth. The bandwidth occupied by the transmitted signal is based on the modulation type, symbol rate, and pulse-shaping filter used. To successfully perform demodulation, the analyzer must acquire the complete bandwidth.

How many bits per symbol transmitted in 16-QAM?

Each symbol in the constellation contains up to 4 bits (0s and 1s) in a 16-QAM scheme. Therefore, the number of combinations that are possible using 4 binary bits is 24 = 16, with each state or symbol containing a value from 0000 to 1111.

How do you calculate bits per symbol?

The bits per symbol is the (modulation's power of 2) × (Forward Error Correction). So for example, in 64-QAM modulation 64 = 2⁶ so the bits per symbol is 6.

What is the symbol rate for 256 QAM?

As the number of symbols increases, more data bits are transmitted per symbol. For example, 64-QAM is a QAM scheme with 64 symbols, and 256-QAM is a scheme with 256 symbols. 256-QAM conveys 8 bits per symbol (as 256 = 2⁸), so achieving twice the data rate of 16-QAM for the same symbol rate.