1. (20 points) Supply the missing information in each statement. (1) Twelve sequ

Question

1. (20 points) Supply the missing information in each statement. (1) Twelve sequential data of 256-byte blocks is transmitted. Average number of errors received in this transmission is 2. The system BER is (2) The process of emphasizing lower-level signals and de-emphasizing higher-level signals is called (3) In TDM, multiple signals share a channel by transmitting in different (4) The multiple signals in an FDM system are used to modulate separate (5) The magnitude of a quantization interval is also called the (6) The minimum sampling rate for a signal with a 4-kHz bandwidth is kHz (7) The even parity bit for the ASCII character A (1000001 ) is (8) When multiplexing is used to transmit information, then a must be used at the receiving end of the communications link. modulating wave shifts the output between two predetermined frequencies. bits that indicate the beginning and ending of the word. is a form of data transmission in which the (10) In asynchronous transmission each data word is accompanied by

Explanation / Answer

2. The process of emphasizing low level signals and deemphasizing higher level signals is called Companding.

3. In TDM same channel is shared by the signals by transmitting in different time intervals.

4. Multiple signals in FDM are used to modulate different message signals.

5. Quantization interval is also known as step size.

6. According to nyquist theorem minimum sampling rate must be atleast twice of BW therefore in this case it is 8khz.

Please post remaining seperately.. Thanx

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