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The performance of BPSK is best is term of BER because _______

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The performance of BPSK is best is term of BER because _______

(a) Symbol offset interference does not exist

(b) Existence of cross rail interference

(c) No multipath delay

(d) Doppler spread

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The above asked question is from Modulation Performance in Fading and Multipath Channels in chapter Modulation Techniques for Mobile Radio of Wireless/Mobile

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The correct answer is (a) Symbol offset interference does not exist

Explanation: BER performance of BPSK is best among all the modulation schemes compared. This is because symbol offset interference does not exist in BPSK. Symbol offset interference is also called cross rail interference due to the fact that the eye diagram has multiple rails.

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