Digital CommunicationThis book concerns digital communication. Specifically, we treat the transport of bit streams from one geographical location to another over various physical media, such as wire pairs, coaxial cable, optical fiber, and radio waves. Further, we cover the mul tiplexing, multiple access, and synchronization issues relevant to constructing com munication networks that simultaneously transport bit streams from many users. The material in this book is thus directly relevant to the design of a multitude of digital communication systems, including for example local and metropolitan area data net works, voice and video telephony systems, the integrated services digital network (ISDN), computer communication systems, voiceband data modems, and satellite communication systems. We extract the common principles underlying these and other applications and present them in a unified framework. This book is intended for designers and would-be designers of digital communication systems. To limit the scope to manageable proportions we have had to be selective in the topics covered and in the depth of coverage. In the case of advanced information, coding, and detection theory, for example, we have not tried to duplicate the in-depth coverage of many advanced textbooks, but rather have tried to cover those aspects directly relevant to the design of digital communication systems. |
Contents
10 | |
STOCHASTIC SIGNAL PROCESSING | 34 |
PHYSICAL MEDIA AND CHANNELS | 94 |
MODULATION | 146 |
DETECTION | 249 |
INTERSYMBOL INTERFERENCE | 289 |
ADAPTIVE EQUALIZATION | 371 |
CODING | 408 |
TRELLIS CODING | 503 |
SYNCHRONIZATION | 523 |
CARRIER RECOVERY | 548 |
TIMING RECOVERY | 560 |
MULTIPLE ACCESS ALTERNATIVES | 587 |
MULTIPLEXING | 617 |
ECHO CANCELLATION | 642 |
NETWORKS | 668 |
Common terms and phrases
alphabet antenna approximately Assume attenuation autocorrelation bandlimited bandwidth baseband baud rate binary antipodal bit rate bit stream chapter coder codeword complex complex-valued Consider constant constellation continuous-time convergence convolutional criterion data symbols decision decoder defined demodulation derived detection digital communication system eigenvalue equivalent error event error probability Euclidean example Exercise feedback Fourier transform frequency hence IEEE impulse response independent intersymbol interference isolated pulse LE-ZF line code linear equalizer Markov chain matched filter minimize minimum distance ML detector ML sequence detector modulation optical fiber optimum output passband PAM path phase detector Poisson power spectrum probability of error Problem pulse shape random process random variable real-valued receive filter received signal result samples shot noise Show shown in figure signal space slicer slicer input spectral techniques thermal noise tion transfer function transmission transmitted signal trellis Viterbi algorithm zero