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Chirp-SF signal is a new kind of high range of resolution signal. This paper firstly points out that the traditional signal processing methods will cause “ghost images” when there is more than one scatter in a distance unit. Then a new method which including interfacing each sub-pulse in the Timeline and frequency shifting to Constitute a FM signal is proposed. We can solve this problem and have a...
When the life-detection radar detects the human-life existence, echoes from stationary barriers are generally so strong that make the post-amplifier saturated and submerge the useful life signal. In this paper, a method of interference suppression is discussed. To restrain strong interferences, a reference signal deriving from emission signal is used to cancel the clutters. This paper designs a cancellation...
The paper is to research on the RF design of GSM/ CDMA1X simultaneous dual-mode mobile terminals. The interference issue between GSM RF and CDMA RF units is emphasized, which consists of 4 interference scenarios. 1, interference of GSM Tx to CDMA Rx; 2, interference of GSM Tx spurious emissions to CDMA Rx; 3, interference of CDMA Tx to GSM Rx; 4, interference of CDMA Tx spurious emissions to GSM Rx...
This paper is to study on the RF design of GSM/CDMA 1X simultaneous dual-mode mobile terminal. First, considering government regulatory requirements, the main RF interference between GSM and CDMA 1X units in the terminal and the required C/N at CDMA unit input for the receiver normal operation is analyzed. Secondly, the C/N at CDMA receiver input under the cases of Co-channel and adjacent channel...
An encryption solution completed in a DTS is introduced. This solution consists of system management for cipher key and E2EE. For cipher key management, a server is used in the system. The E2EE is designed on the basis of a platform using OMAP5910 as a primary processor. Interface for information exchange is depicted in brief.
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