Understanding Information Transmission
Understanding Information Transmission introduces you to the entire field of information technology. In this consumer handbook and introductory student resource, seven chapters span the gamut of the field—the nature, storage, transmission, networking, and protection of information. In addition to the science and technology, this book brings the subject alive by presenting the amazing history of information technology, profiling incredible inventions and fascinating inventors, and their dramatic impact on society. Features include problem sets, key points, suggested reading, review appendices, and a full chapter on mathematical methods. Private and public funding of information technology continues to grow at staggering rates. Learn what’s behind this race to be the biggest, brightest, and fastest in the field with Understanding Information Transmission.
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algorithm AM-DSB ampliﬁer amplitude amplitude modulation analog bandwidth binary digits binary symmetric channel bit rate broadcasting cable called carrier channel channel coding Chapter cipher ciphertext circuit codeword communication complex number convolutional convolutional codes cryptosystem deﬁned digital modulation discrete random variable distance domain electrical electronic encoder encrypted energy error example ﬁber ﬁeld ﬁle ﬁlm ﬁnd ﬁrst ﬁxed follows Fourier bandwidth Fourier transform frequency function Hamming code Huffman code IEEE impulse response information transmission Internet layer linear LTI system mathematical method mobile node noise obtain ofﬁce outcomes packets plaintext Pr(A probability pulse QPSK radio random variable ratio receiver sample scheme shown in Figure signal simply sinusoid spectrum speech switching symbols telegraph telephone television terminal theorem theory time-invariant transmitted uncertainty Vernam cipher waveform