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FREQUENCY MODULATION (FM) WITH MATLAB CODE
BASIC Frequency Modulation (AM) is a one of the conventional modulation technique to transmit signals using a carrier wave. The frequency of a high frequency carrier wave is changed in accordance with the frequency of message signal. In frequency modulation amplitude of the carrier signal remain same. In amplitude Modulation or Frequency Modulation frequency of…
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AMPLITUDE MODULATION (AM) WITH MATLAB CODE
BASIC Amplitude modulation (AM) is a one of the conventional modulation technique to transmit signals using a carrier wave. The amplitude or the strength of a high frequency carrier wave is changed in accordance with the amplitude of message signal. In amplitude modulation frequency of the carrier signal remain same. In amplitude Modulation or Frequency…
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HDB3 SCRAMBLING TECHNIQUE FOR LINE CODING WITH MATLAB CODE FOR ENCODING AND DECODING
Basic High Density Bipoler 3 Zero (HDB3) works in a similar way to AMI by changing poles for each binary 1. Moreover when it found 4 consecutive 0’s it replace them by ‘000V’ or ‘B00V’ depending on number of non-zero pulses (odd or even) after last substitution If number of non-zero pulses after last substitution…
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B8ZS SCRAMBLING TECHNIQUE FOR LINE CODING WITH MATLAB CODE FOR ENCODING AND DECODING
Basic Binary 8 Zero Substitution (B8ZS) works in a similar way to AMI by changing poles for each binary 1. Moreover when it found 8 consecutive 0’s it replace them by ‘000VB0VB’. Here, V means violation (same to previous non-zero bit) and B means Balancing (opposite of previous non-zero bit). Here is an example of…
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AMI LINE CODING WITH MATLAB CODE FOR ENCODING AND DECODING
Basic Alternate Mark Inversion (AMI) is a bipolar encoding system where neutral (zero) voltage represents binary 0 and alternating positive and negative voltages represents binary 1. Here is an example of AMI line coding for bits 10111001. Conversion from bitstream to signal is called encoding. Conversion from signal to bitstream is called decoding. Coding With…
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DIFFERENTIAL MANCHESTER LINE CODING WITH MATLAB CODE FOR ENCODING AND DECODING
Basic Differential Manchester is somewhat a combination of the RZ and NRZ-I line coding schemes. There is always a transition at the middle of the bit but the bit values are determined at the beginning of the bit. If the bit is 0 then there is a transition, if the bit is 1 then there…
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Manchester LINE CODING WITH MATLAB CODE FOR ENCODING AND DECODING
Basic In telecommunication and data storage, Manchester code is a line code in which the encoding of each data bit is either low then high, or high then low, for equal time. Normally when the bit is 1 it is start from high and then goes to low, When the bit is 0 it is start from low and then goes to 1.…
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RZ LINE CODING WITH MATLAB CODE FOR ENCODING AND DECODING
Basic Return To Zero (RZ) describes a line code used in telecommunication signals in which the signal drops (returns) to zero between each pulse. This takes place even if a number of consecutive 0’s or 1’s occur in the signal. Here is an example of RZ line coding for bits 10111001. Conversion from bitstream to signal is called encoding. Conversion…
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NRZ-I Line Coding With MatLAB Code For Encoding and Decoding
Basic Non Return To Zero (NRZ) line code is a binary code in which ones are represented by one significant condition, usually a positive voltage, while zeros are represented by some other significant condition, usually a negative voltage, with no other neutral or rest condition. Non Return To Zero Inverted (NRZ-I) is a type of NRZ line coding. In NRZ-I usually…
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NRZ-L Line Coding With MatLAB Code For Encoding and Decoding
Basic Non Return To Zero (NRZ) line code is a binary code in which ones are represented by one significant condition, usually a positive voltage, while zeros are represented by some other significant condition, usually a negative voltage, with no other neutral or rest condition. Non Return To Zero Level (NRZ-L) is a type of NRZ line coding. In NRZ-L usually…
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Unipolar Line Coding With MatLAB Source Code For Encoding and Decoding
Basic Unipolar encoding is a line code. A positive voltage represents a binary 1, and zero volts indicates a binary 0. It is the simplest line code, directly encoding the bitstream. Here is an example of Unipolar line coding for bits 10111001. Conversion from bitstream to signal is called encoding. Conversion from signal to bitstream is called decoding. Coding With…
