Method for demodulating fragmented frame signal on basis of multichannel communication receiving system
A communication receiving and demodulating method technology, which is applied in the field of fragmented frame signal demodulation, can solve the problems of frequency offset compensation DDS multiplexing difficult to realize, interrupter startup failure, etc., to improve system performance consistency and simplify production Process, effect of good adaptive properties
Active Publication Date: 2017-06-27
武汉米风通信技术有限公司
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Problems solved by technology
However, in the multi-channel communication receiving system, the interrupter fails to start when the fragmented frame signal is correctly demodulated, and frequency offset compensation DDS multiplexing is difficult to achieve
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[0029] The present invention will be further described below in conjunction with specific embodiment:
[0030] A method for demodulating fragmented frame signals based on a multi-channel communication receiving system, comprising the following steps:
[0031] The area where the received data is stored in the DDR is regarded as a circular first-in-first-out queue with a depth of 3;
[0032] Each direct memory access data movement consumes one storage unit, and cycles after three direct memory access transmissions, so as to ensure the integrity of one frame of data;
[0033] Before each direct memory access transmission is completed, complete the judgment and reorganization of 1000 channels of effective frame signals, and obtain more processing time by increasing the amount of data moved each time in direct memory access;
[0034] Complete testing of existing modules.
[0035] The area storing received data in the DDR is regarded as a circular first-in-first-out queue with a d...
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The invention discloses a method for demodulating a fragmented frame signal on the basis of a multichannel communication receiving system. The method comprises steps of using a region in a DDR, in which received data is stored, as a circular FIFO (First Input First Output) queue with a depth of 3 and the like. The detection method disclosed by the invention can ensure integrity of one frame of data, can obtain more processing time by increasing a volume of data transited each time by direct memory access, and just gives away real-time performance of processing. The detection method disclosed by the invention further has the excellent adaptive characteristic, is beneficial for improving system performance consistency and simplifying the production flow, is high in interference resistance in the detecting process, and has excellent receiving performance.
Description
technical field [0001] The invention belongs to the technical field of wireless communication. In particular, it relates to a demodulation method of fragmented frame signals based on a multi-channel communication receiving system. Background technique [0002] Demodulation of a fragmented frame signal is the process of recovering the message from the modulated signal carrying the message. In various information transmission or processing systems, the sender modulates the carrier wave with the message to be transmitted to generate a signal carrying the message. The receiver must recover the transmitted message before it can be exploited. First, move the frequency spectrum carrying useful information near the carrier to the baseband, and then filter out the baseband signal with a corresponding filter to complete the demodulation task. But in the multi-channel communication receiving system, the interrupter fails to start successfully when the fragmented frame signal is corr...
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IPC IPC(8): H04L1/00H04W28/06H04W28/14G06F12/12
CPCG06F12/128H04L1/0008H04L1/0076H04L1/0083H04W28/065H04W28/14
Inventor 余少波
Owner 武汉米风通信技术有限公司