Doppler spread is given by _______(a) carrier frequency times the ratio of maximum velocity of a transmitter divided by propagation velocity(b) carrier frequency times the ratio of minimum velocity of a transmitter divided by propagation velocity(c) carrier frequency times the ratio of propagation velocity divided by maximum velocity of a transmitter(d) carrier frequency times the ratio of propagation velocity divided by minimum velocity of a transmitterI had been asked this question in a job interview.The query is from Antenna Tradeoffs in division Technology Tradeoffs in Software Defined Radio of Cognitive Radio

Doppler spread is given by _______(a) carrier frequency times the rati

1.	Doppler spread is given by _______(a) carrier frequency times the ratio of maximum velocity of a transmitter divided by propagation velocity(b) carrier frequency times the ratio of minimum velocity of a transmitter divided by propagation velocity(c) carrier frequency times the ratio of propagation velocity divided by maximum velocity of a transmitter(d) carrier frequency times the ratio of propagation velocity divided by minimum velocity of a transmitterI had been asked this question in a job interview.The query is from Antenna Tradeoffs in division Technology Tradeoffs in Software Defined Radio of Cognitive Radio
Answer» CORRECT choice is (a) carrier frequency times the ratio of MAXIMUM velocity of a TRANSMITTER divided by propagation velocity To explain I would say: Doppler spread is given by carrier frequency times the ratio of maximum velocity of a transmitter divided by propagation velocity. Doppler spread is observed in the STUDY of spatial coherence.

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