Anti-interference RF (radio frequency) reconfigurable transceiver
A technology of transceivers and radio frequency receivers, applied in the field of radio frequency circuit systems and wireless communications, to achieve the effects of strong practicability, avoiding mutual interference, and convenient use
Active Publication Date: 2011-09-14
SOUTHEAST UNIV
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Problems solved by technology
In the existing wireless communication system, the fixed spectrum allocation mode is generally adopted, and the interference problem is solved through frequency planning, etc., while in the cognitive radio system, since there are two kinds of users, and the frequency usage is dynamic, the interference between the two kinds of users The problem is very prominent and cannot be solved by general means
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[0026] In order to make the content of the present invention more obvious and understandable, further explanations will be made below in conjunction with the accompanying drawings and specific implementation methods.
[0027] combine figure 1 As shown, the anti-interference radio frequency reconfigurable transceiver of the present invention includes a transceiver switch 06, a radio frequency receiver 02 and a radio frequency transmitter 03. The external port of the transceiver of the present invention uses an antenna 04, and the connection between the antenna 04 and the transceiver switch 06 A band-pass filter 05 is connected in series; the baseband system 01 in the cognitive radio system performs transceiver control on the transceiver switch 06, thereby controlling the working state of the transceiver of the present invention; the radio frequency receiver 02 includes a zero-IF receiving module 21, and transmits and receives A low-noise amplifier 24, a reconfigurable channel s...
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The invention discloses an anti-interference RF (radio frequency) reconfigurable transceiver, which comprises a zero-intermediate-frequency RF receiver and a zero-intermediate-frequency RF transmitter, wherein the RF receiver comprises a reconfigurable channel selection array which is constituted by n channels with different center frequencies, m rows of input selection switch arrays with a mutually symmetrical structure and an output selection switch array; the number of input selection switches in each row is 2m-1; 2m is equal to n; first and second channels, third and fourth channels......(n-1)th and nth channels are respectively connected to different input selection switches in the mth row; and first and second channels, third and fourth channels......[2(m-1)-1]th and 2(m-1)th channels in the mth row are respectively connected to different input selection switches in the (m-1) row. The RF reconfigurable transceiver controls states of the selection switches so as to realize selection of filtering channels with different frequencies, improves the anti-interference capacity of the system, can realize coexistence of a master user and a secondary user without mutual interference, and ensures the communication quality.
Description
technical field [0001] The invention relates to the field of radio frequency circuit system and wireless communication, in particular to an anti-jamming radio frequency reconfigurable transceiver applied to a cognitive radio system. Background technique [0002] With the development of society and economy, the demand for wireless communication continues to increase, and spectrum resources are becoming more and more scarce. The original fixed spectrum allocation method can no longer meet the needs of various applications for spectrum resources. Under the premise of no impact on the holder, new applications can be connected to the existing working frequency band, thereby improving spectrum utilization, that is, dynamic spectrum resource sharing. To access new users of the dynamic spectrum sharing communication system under the premise of existing users, the interference of the original system signal to the dynamic spectrum sharing system must be considered, and at the same tim...
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IPC IPC(8): H04B1/10H04B1/30H04B1/40H04B1/525
Inventor 朱晓维游长江柳靖张晓东
Owner SOUTHEAST UNIV