随笔分类 - Matlab
摘要：Angle Modulation Angle-modulation schemes, which include frequency modulation (FM) and phase modulation(PM), belong to the class of nonlinear modulati
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摘要：Conventional AM Demodulation The conventional AM is inferior to DSB-AM and SSB-AM whenpower and SNR are considered. The reason is that a usually large
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摘要：Conventional AM Demodulation The conventional AM is inferior to DSB-AM and SSB-AM whenpower and SNR are considered. The reason is that a usually large
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摘要：Demodulation of AM Signals Demodulation is the process of extracting the message signal from the modulated signal.The demodulation process depends on
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摘要：Demodulation of AM Signals Demodulation is the process of extracting the message signal from the modulated signal.The demodulation process depends on
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摘要：SSB-AM SSB-AM is derived from DSB-AM by eliminating one of the sidebands. Therefore,it occupies half the bandwidth of DSB-AM. Depending on the sideban
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摘要：Amplitude Modulation (AM) Amplitude modulation (AM), which is frequently referred to as linear modulation, isthe family of modulation schemes in which
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CCS - Channel Capacity and Coding - Channel Coding - Decoding LDPC Codes - The Sum-Product Algorithm
摘要：The Sum-Product Algorithm The sum-product algorithm, which belongs to the class of message-passing algorithms,is an iterative decoding algorithm for L
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摘要：Decoding LDPC Codes - The Bit-Flipping Algorithm The bit-flipping algorithm is a hard-decision decoding algorithm with low complexity. A modified, and
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摘要：Turbo Codes Shannon's random coding theorem states that codes achieving channel capacity musthave random, or close to random, distribution as well as
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摘要：Decoding of Convolutional Codes Viterbi Algorithm There exist many algorithms for decoding of convolutional codes. The Viterbi algorithmis probably th
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摘要：Convolutional Codes In block codes each sequence of k information bits is mapped into a sequence of nchannel inputs in a fixed way regardless of the p
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摘要：Performance of Linear Block Codes Linear block codes can be decoded using either soft-decision decoding or hard-decisiondecoding. In a hard-decision d
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摘要：Hamming Codes Matlab Coding 1 % MATLAB script for Illustrative Problem 10.9. 2 echo on 3 k=11; 4 for i=1:2^k 5 for j=k:-1:1 6 if rem(i-1,2^(-j+k+1))>=
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摘要：Linear Block Codes Linear block codes are the most important and widely used class of block codes. Ablock code is linear if any linear combination of
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摘要：Channel Coding Communication through noisy channels is subject to errors. In order to decrease the effectof errors and achieve reliablecommunication,
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摘要：Matlab Coding 1 % MATLAB script for Illustrative Problem 10.2. 2 echo on 3 pn0_db=[-20:0.1:30]; 4 pn0=10.^(pn0_db./10); 5 capacity=3000.*log2(1+pn0/30
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摘要：Channel Capacity and Coding The objective of any communication system is to transmit information generated by aninformation source from one location t
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摘要：Peak-to-Average Power Ratio in OFDM Systems A major problem in multicarrier modulation is the high peak-to-average power ratio(PAR) that occurs in the
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摘要：Spectral Characteristics of OFDM Signals The signals transmitted on the subcarriers of an OFDM system are mutually orthogonal in the time domain; that
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