Title :
On the Optimality of Uniform Pulse Amplitude Modulation
Author :
Makowski, Armand M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD
Abstract :
We characterize the optimal M-ary pulse amplitude modulation (PAM) constellation under a general energy constraint. It is shown that uniform M-ary PAM may not always yield the best signal design, e.g., under the average energy constraint. We also identify situations where uniform PAM is optimal, e.g., the peak energy constraint
Keywords :
digital communication; pulse amplitude modulation; telecommunication signalling; PAM constellation; digital communication; optimal M-ary pulse amplitude modulation; signal design; Additive white noise; Amplitude modulation; Computer errors; Constellation diagram; Constraint theory; Digital communication; Noise level; Pulse modulation; Signal design; $M$-ary pulse amplitude modulation (PAM) signaling; optimal signal design;
Journal_Title :
Information Theory, IEEE Transactions on
DOI :
10.1109/TIT.2006.885445
