Question

The sampling rate of promising SDR technology ranges between _____

(a) 1 MHz – 100 MHz

(b) 10 MHz – 100 MHz

(c) 1 MHz – 1 GHz

(d) 1 MHz – 10 GHz

This question was posed to me during an online interview.

This intriguing question originated from ADC Tradeoffs in section Technology Tradeoffs in Software Defined Radio of Cognitive Radio

Answer 1

The correct option is (b) 10 MHz – 100 MHz

The explanation is: The sampling rate of promising SDR technology ranges between 10 MHz – 100 MHz. The resolution falls in the range of 30 dB– 60 dB. Frequency division multiplexing uses few MHz IF-bandwidth. PCM, cellular band allocation, 3G, and air navigation signals use hundreds of MHz.