| Multipath-interference is the common problem in the morden radio communication area. Equalizer technology, which is the classical method to get rid of multipath-interferce, based on the theory that using the reversed transmission function of wireless channel to equalize the distorted signal. This technology, however, according to its theory, is sensitive to the multipath-interference intensity.It could reach a good performance, under the circumstance that Multipath-interference is not so serious, however, if the transmission channel is under intensive multipath-interference, its performance will deteriorate seriously. Meanwhile, Indepent Component Analysis(ICA) technology, as an effective liner-transformation technology is fast developed recent years.What's more, this technology is in widely researched and developed recently especially in the field of wireless communication and signal processing, because of its effective,stable perfomance and highly-precision when used for signal-separation. The ICA-based radar anti-interference technology and ICA-based anti-multiuser interference technology are good cases in point.It attachs great importance in this thesis to the signal-processing under the intensive multipath-interferce. The Independent Component Analysis technology is studied in this paper besides the studying of the classical Equalizer technology. Based on the combination of ICA technology and common anti-multipath inteference theory, A new ICA-based multipath inteference technology is developed in this paper. This new technology, however, compared with the traditional equalizer technology, have better performance and become less sensitive to the multipath intensity, as a result, This new technology is more suitable to the signal-processing under the condition of serious multipath interference. Furthermore, the validity and feasiblity of this ICA-based anti-multpath technology is proven in this thesis by the theory analysis as well as the matlab simulation. |
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