December 2011
Intermediate to advanced
436 pages
18h 7m
English
book
Real-Time Digital Signal Processing from MATLAB® to C with the TMS320C6x DSPs, Second Edition, 2nd Edition
by Thad B. Welch, Cameron H.G. Wright, Michael G. Morrow
Content preview from Real-Time Digital Signal Processing from MATLAB® to C with the TMS320C6x DSPs, Second Edition, 2nd Edition
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Chapter 18
Project 9: MPSK and QAM
Digital Transmitters
18.1 Theory
I
N Chapter 16, we reviewed a few of the concepts involved in digital communications and
developed an impulse modulated (IM), binary phase shift-keying (BPSK) transmitter.
In this chapter, we will extend those concepts to increase the system’s spectral efficiency
(that is, squeeze more data into the same bandwidth). The system’s spectral efficiency will
be increased by adding a second dimension to the signal’s constellation diagram, similar to
a two-dimensional Cartesian coordinate system in x and y. This added dimensionality will
result in each symbol representing multiple bits. Specifically ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.