Spectrum Nulling TH Codes with Improved Correlation Performance for Multi-user UWB Systems
نویسندگان
چکیده
The power spectrum of UWB-IR systems can be controlled by proper selection of any of the three entities pulse, modulation scheme and Time Hopping (TH) codes, or their combinations . This paper presents algorithms to design TH codes with good correlation properties for spectrum nulling at a selected frequency, of multiuser UWB signals, to avoid interference to narrow band systems. To improve the correlation between sequences, variation in frequency hopping (FH) codes, LCC and one Coincidence FH codes are applied. Results are presented to verify the analysis.
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تاریخ انتشار 2015