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Scientific paper ID 879 : 2013/3
![]() FORMATION OF COMPLIANT SIGNALS OF WALSH WITH COMMUNICATION CHANNELS
Antonio Andonov, Ilka Stefanova With the optimization of the form of the transmitted signals are engaged many authors. In a number of publications raised the determination of signals that minimize the level of uncertainty in the transmission of information. Analysis of the results in these works shows that the tasks of coordinating the waveform with the communication channel are placed essentially only for linear Gaussian channels of communication in private, although the most common limitations of the mean Square and less of the peak value. The problem is seen mainly in terms of optimum reception and to a much lesser extent on the optimum form at the transmitter. Practically absent publications on the problem of choosing the optimal type of modulation of these signals. Results are limited to proof of optimality and opposite simplex signals when transmitting discrete information on the background of Gaussian noise. Hardly studied the properties of coherent signals. In practice increasingly meet with nonlinear and non-Gaussian channels of communication, such as major channels such as sonar, satellite, fiber optic, etc. And if the issues of theory and practice for optimal signal reception of such channels are relatively well developed, the issues of coordination with them to form the transmitted signals and their modulation types were tested in the open technical literature sufficient. This determines to a large extent and timeliness of the proposed article, which proposed a model and characteristics of digital carrier Walsh and their development in order to address the impact of the communication link to the form of the wavefor
радиокомуникации цифрова носеща сигнали на УолшKew words: Radio communications digital carrier signals Walsh Antonio Andonov Ilka Stefanova BIBLIOGRAPHY [1] Oppenheim A., Willsky A., Yong I., Signals and Systems, Prentice-Kall, Inc.,1983 |