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Error code performance evaluating method of compressed domain direct spread receiver

An evaluation method and receiver technology, which can be used in receiver monitoring, transmission monitoring, electrical components, etc., and can solve the problems of huge calculation amount and calculation time.

Inactive Publication Date: 2013-02-27
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The amount of calculation and calculation time required for Monte Carlo simulation itself is very huge

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  • Error code performance evaluating method of compressed domain direct spread receiver
  • Error code performance evaluating method of compressed domain direct spread receiver
  • Error code performance evaluating method of compressed domain direct spread receiver

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Experimental program
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Embodiment Construction

[0022] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] First, the direct spread signal is introduced.

[0024] Since the electromagnetic wave is affected by the multipath effect in the wireless channel during the transmission of the electromagnetic wave to the receiver, the waveform received by the receiver is the superposition of different time-delayed signals containing noise. For the direct sequence spread spectrum communication system, the direct spread signal received by the receiver is after delaying the spread spectrum waveform under different transmission multipaths, then performing resolvable multipath gain weighting and multiplying the corresponding polar symbols, Finally formed after superposition. When the signal carrier is not considered and no noise is added, for the direct sequence spread spectrum communication system, the equivalent baseband of the signal s(t) received by the receiver c...

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Abstract

The invention discloses an error code performance evaluating method of a compressed domain direct spread receiver. The method comprises the following steps that 1, used measurement matrixes fai(M*N) and bases psi (N*U) when the compressed domain direct spread receiver collects and recovers direct sequence spread spectrum signals are obtained; 2, P kinds are freely selected from DL kinds of time delay, and the ideal error code rate corresponding to the current time delay combination is adopted; and 3, all time delay combinations are observed, all obtained values are subjected to averaging, and the average error rate of the receiver is obtained. The error code performance evaluating method has the advantages that the mathematical model of direct sequence spread spectrum signals in the compressed domain is analyzed, the theoretical value of the error code rate of the receiver is given, the performance of the compressed domain direct spread receiver can be evaluated, and the time and the resource amount consumed by the evaluating method are much smaller than those of a Monte Carlo method.

Description

technical field [0001] The invention relates to compressed sensing technology and belongs to the field of communication signal processing, in particular to two code error performance evaluation methods of compressed domain direct spread receivers. Background technique [0002] According to the Nyquist sampling law, in order to receive the signal without distortion, the receiver needs to sample at a rate no lower than twice the highest frequency component of the signal. With the development of today's wireless communication systems, the bandwidth of the signal is getting wider and wider, which puts forward very high requirements on the front-end A / D of the receiver. In the direct sequence spread spectrum communication system, since the signal bandwidth is further broadened during the spread spectrum process, it becomes very difficult for the receiver to sample according to the Nyquist sampling law, which will increase the sampling cost and sampling complexity. In addition, a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00H04B17/29
Inventor 韩航程王帅安建平王铁星方金辉卜祥元孙磊
Owner BEIJING INSTITUTE OF TECHNOLOGYGY