What is the relationship between symbol rate and baud?
The correct answer is A: They are the same. The relationship between symbol rate and baud is that they are the same. Baud rate is another name for symbol rate - both refer to the number of symbols transmitted per second.
The term 'baud' (named after Émile Baudot) originally referred to the signaling rate, and it's equivalent to symbols per second. Symbol rate and baud rate are interchangeable terms. For example, if you're transmitting at 31.25 baud, that means 31.25 symbols per second. Some people use 'baud' for the signaling rate and 'bit rate' for the data rate (which equals baud × bits per symbol), but symbol rate and baud are the same thing.
Exam Tip
Symbol rate = Baud rate. Remember: Symbol rate and baud rate are the same - both refer to symbols per second. Baud is just another name for symbol rate.
Memory Aid
"**S**ymbol **R**ate = **B**aud **R**ate (think 'SR = BR' = Same Rate)"
Real-World Application
You're transmitting a digital signal at 31.25 baud. This means 31.25 symbols per second. The symbol rate is also 31.25 symbols per second. They're the same thing - 'baud' and 'symbol rate' are interchangeable terms. If each symbol represents 1 bit, your bit rate is also 31.25 bps. If each symbol represents 2 bits, your bit rate is 62.5 bps, but the baud/symbol rate is still 31.25.
FCC Part 97.3Key Concepts
Why Other Options Are Wrong
Option B: Incorrect. Baud is not twice the symbol rate. They're the same - baud is just another name for symbol rate.
Option C: Incorrect. Baud rate is not half the symbol rate. They're identical terms referring to the same thing.
Option D: Incorrect. The relationship doesn't depend on the code used. Symbol rate and baud are always the same, regardless of the encoding scheme.
题目解析
The correct answer is A: They are the same. The relationship between symbol rate and baud is that they are the same. Baud rate is another name for symbol rate - both refer to the number of symbols transmitted per second. The term 'baud' (named after Émile Baudot) originally referred to the signaling rate, and it's equivalent to symbols per second. Symbol rate and baud rate are interchangeable terms. For example, if you're transmitting at 31.25 baud, that means 31.25 symbols per second. Some people use 'baud' for the signaling rate and 'bit rate' for the data rate (which equals baud × bits per symbol), but symbol rate and baud are the same thing.
考试技巧
Symbol rate = Baud rate. Remember: Symbol rate and baud rate are the same - both refer to symbols per second. Baud is just another name for symbol rate.
记忆口诀
**S**ymbol **R**ate = **B**aud **R**ate (think 'SR = BR' = Same Rate)
实际应用示例
You're transmitting a digital signal at 31.25 baud. This means 31.25 symbols per second. The symbol rate is also 31.25 symbols per second. They're the same thing - 'baud' and 'symbol rate' are interchangeable terms. If each symbol represents 1 bit, your bit rate is also 31.25 bps. If each symbol represents 2 bits, your bit rate is 62.5 bps, but the baud/symbol rate is still 31.25.
错误选项分析
Option B: Incorrect. Baud is not twice the symbol rate. They're the same - baud is just another name for symbol rate. Option C: Incorrect. Baud rate is not half the symbol rate. They're identical terms referring to the same thing. Option D: Incorrect. The relationship doesn't depend on the code used. Symbol rate and baud are always the same, regardless of the encoding scheme.
知识点
Symbol rate, Baud rate, Symbols per second, Digital transmission
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.