GTA 5 Beta Key Generator 2014 (615.98 KB)
GTA 5 Beta Key Generator 2014
Source title: Low PAPR preamble for IEEE802.16a OFDM system - Low, PAPR, preamble, for, IEEE802.16a, OFDM, system, Abstract
, Orthogonal, frequency, division, multiplexing, (OFDM), is, a, key, enabling, technology, for, future, wireless, communications, systems., OFDM, makes, equalization, simple, and, effective., However, accurate, channel, estimates, are, necessary, at, the, receiver, for, the, optimum, operation, of, OFDM, systems., Channel, estimation, usually, employs, some, form, of, training, signal, also, known, as, the, preamble, in, the, front, of, the, packet., It, is, desirable, to, have, a, preamble, signal, with, the, lowest, peak-to-average, power, ratio, (PAPR), so, that, the, estimation, signal, to, noise, ratio, (SNR), can, be, maximized., In, this, work, we, address, the, problem, of, designing, very, low, peak-to-average, power, ratio, (PAPR), preamble, for, orthogonal, frequency, division, multiplexing, (OFDM), systems., The, initial, preamble, is, designed, using, generalized, chirp, like, (GCL), sequences., In, order, to, obtain, the, lowest, PAPR, the, preamble, is, optimized, using, constrained, nonlinear, optimization, technique., Results, show, that, the, proposed, preamble, has, a, PAPR, of, just, 0.871, dB, that, translates, into, a, gain, of, 2.129, dB, when, compared, to, the, prescribed, preamble, of, IEEE, 802.16a, standard, that, has, a, PAPR, of, 3, dB. - sciencestage.com Engineering
http://sciencestage.com/d/4841479/low-papr-preamble-for-ieee802.16a-ofdm-system.html |
