- Back to Home »
- baud , bit rate , tech »
- Bit Rate v/s Baud Rate

Tuesday, 3 April 2012

**BIT RATE:**The bit rate is measured as number of

**bits**transferred per second.

Unit symbol :

**bit/s**or

**bps**

**BAUD RATE:**The bit rate is measured as number of

**symbols**or

**pulses**transferred per second It is also called as

**symbol rate**.

Unit symbol :

**Bd/s**

**1 kBd = 1,000 Bd**

**Example:**

**1000 Bd**is equivalent to a

**symbol rate**of

**1,000 symbols per second**.

For a

**modem**, this corresponds to

**1,000 tones per second**, and

For a

**line code**, this corresponds to

**1,000 pulses per second**.

Hence. the

**symbol duration time**can be calculated as follows:

**1/1,000 second = 1 millisecond**.

**GROSS BIT RATE:**The gross bit rate is measured as the total number of physically transferred

**bits per second(**

**bps)**over a communication link, including

**useful data**as well as

**protocol overhead**.

*R*_{b }or*f*_{b}KEY POINTS:

- In bit rate, 1000 bit/s or b/s should be represented as
**kbps**and**NOT Kbps** - The formal abbreviation for "
**bits per second**" is**bit/s**and**NOT bits/s**. - The symbol rate is related to but should not be confused with
**gross bit rate**expressed in**bit/s.****Example:**If, and the*N*bits are conveyed per symbol**gross bit rate is**, inclusive of channel coding overhead, the*R***baud rate (symbol rate)**can be calculated as:*f*_{s}

**BIT RATES****Name****Symbol****Multiple****Decimal prefixes**kilobit per secondkbit/s10^{3}megabit per secondMbit/s10^{6}gigabit per secondGbit/s10^{9}terabit per secondTbit/s10^{12}**Binary prefixes**kibibit per secondKibit/s2^{10}mebibit per secondMibit/s2^{20}gibibit per secondGibit/s2^{30}tebibit per secondTibit/s2^{40}**Reference:**Internet and Wikipedia.