Method coding of QAM signals for transmission fractional number bit per symbol
ICCSC'02. 1st IEEE International Conference on Circuits and Systems for Communications. Proceedings (IEEE Cat. No.02EX605) - Trang 198-201
Tóm tắt
In this paper a simple method of coding of fractional number bit per symbol from a point of view of computing expenditures is offered at QAM. The presentation is carried on with reference to case, when it is necessary to transmit the fourth part of bit per symbol. And apart from of the description of operation algorithm of the encoder and the decoder, the creation of signal and value of a power gain achieved using the given method are shown. The offered method of coding is used for design of the high-speed modem, trials of which have confirmed expected dependence of coefficient of errors upon the value of the a signal/noise ratio.
Từ khóa
#Quadrature amplitude modulation #Modems #Decoding #Multidimensional systems #Signal design #Signal to noise ratio #Constellation diagram #1f noise #Stability #Partitioning algorithmsTài liệu tham khảo
10.1109/JSAC.1984.1146101
1996, A modem operating at data signalling rates of up to 33600 bit/s for use on the general switched telephone network and on leased point-to-point 2-wire telephone-type circuits