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 transmitter
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The query is from Antenna Tradeoffs in division Technology Tradeoffs in Software Defined Radio of Cognitive Radio