Process for transmitting bits of information, receiver information with symbols to decode unknown interspersed with information known with symbols, and.The transmitter to transmit information.

摘要

"The process to transmit bits of information, receiver information with symbols to decode unknown interspersed with information known with symbols, and.Transmitter for transmitting information to a transmitter encodes a number of 2n data bits by the use of N data bits to select one of 2 ^ n ^ levels of a wave cosenoidal and the other n bits.And data to select one of 2 ^ n ^ levels of a sine wave.The modulation affects the levels of wave cosenoidal momentarily deviated by the half of an interval of a symbol of N bit with respect to the levels of sine wave, and is called the QAM diverted (OQAM).A OQAM received signal is amplified, filtered and digitized at a sampling rate of, preferably, only one sample per symbol interval of half of N bit.Successive n-bit half symbols comprise information modulated on a carrier wave cosenoidal alternatively and sinusoidal.The receiver may remove this rotation successively by applying successive counter of successive samples scanned by equal amounts.The samples of rotacionadas are then correlated with known symbols middle - synchronized.The correlations synchronized determine a set of coefficients describing the dependence of each channel sample scanned on one or more unknown half symbols.The channel estimates and are computed, then,Used to evaluate the expected values of the sample received for all possible sequ00b3u00eancias successive unknown half symbols must be decoded.Samples received are then compared with all possible expected values and a measure of disagreement or error metric is computed.This sequ00b3u00eancia with the lowest cumulative error metric is used to determine the output of decoded symbol.In other aspects of the invention, the transmitters and receivers of dual mode are presented, which enable different types of modulation are alternatively used in same device.