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Preface
channels, the BCJR algorithm for iterative decoding
of
turbo codes, and the sum-product
algorithm.
Chapter 9 is focused on digital communication through band-limited channels.
Topics treated in this chapter include the characterization and signal design for band-
limited channels, the optimum receiver for channels with intersymbol interference and
AWGN, and suboptimum equalization methods, namely, linear equalization, decision-
feedback equalization, and turbo equalization.
Chapter 10 treats adaptive channel equalization. The LMS and recursive least-
squares algorithms are described together with their performance characteristics. This
chapter also includes a treatment
of
blind equalization algorithms.
Chapter 11 provides a treatment
of
multichannel and multicarrier modulation.
Topics treated include the error rate performance
of
multichannel binary signal and
M-ary orthogonal signals in AWGN channels; the capacity
of
a nonideallinear filter
channel with AWGN; OFDM modulation and demodulation; bit and power alloca-
tion in an OFDM system; and methods to reduce the peak-to-average power ratio in
OFDM.
Chapter 12 is focused on spread spectrum signals and systems, with emphasis
on direct sequence and frequency-hopped spread spectrum systems and their perfor-
mance. The benefits
of
coding in the design
of
spread spectrum signals is emphasized
throughout this chapter.
Chapter 13 treats communication through fading channels, including the charac-
terization
of
fading channels and the key important parameters
of
multi path spread and
Doppler spread. Several channel fading statistical models are introduced, with empha-
sis placed on Rayleigh fading, Ricean fading, and N akagami fading. An analysis
of
the
performance degradation caused by Doppler spread in an OFDM system is presented,
and a method for reducing this performance degradation is described.
Chapter 14 is focused on capacity and code design for fading channels. After intro-
ducing ergodic and outage capacities, coding for fading channels is studied. Bandwidth-
efficient coding and bit-interleaved coded modulation are treated, and the performance
of
coded systems in Rayleigh and Ricean fading is derived.
Chapter 15 provides a treatment
of
multiple-antenna systems, generally called
multiple-input, multiple-output (MIMO) systems, which are designed to yield spatial
signal diversity and spatial multiplexing. Topics treated in this chapter include detection
algorithms for MIMO channels, the capacity
ofMIMO
channels with AWGN without
and with signal fading, and space-time coding.
Chapter 16 treats multiuser communications, including the topics
of
the capacity
of
multiple-access methods, multiuser detection methods for the uplink in COMA
systems, interference mitigation in multiuser broadcast channels, and random access
methods such
as
ALOHA and carrier-sense multiple access (CSMA).
With 16 chapters and a variety
of
topics, the instructor has the flexibility to design
either a one- or two-semester course. Chapters 3, 4, and 5 provide a basic treatment
of
digital modulation/demodulation and detection methods. Channel coding and decoding
treated in Chapters 7,
8,
and 9 can be included along with modulation/demodulation
in a one-semester course. Alternatively, Chapters 9 through 12 can be covered in place
of
channel coding and decoding. A second semester course can cover the topics
of
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