Performance Analysis of a Digital Acquisition Circuit for DS/FH Spread Spectrum Signals

Xiao, Wen; Song, Weining; Zhang, Yanzhong; Dingrong, Shao; Li, Shujian

doi:10.1109/cnmt.2009.5374698

Cited by 4 publications

(6 citation statements)

References 8 publications

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“…A traditional one is adopted for comparison, where a fast PN code phase scanning and serial search for FH pattern method [2] is adopted as a comparison. I n evaluating the performance, the following parameters were considered: PN code rate 1×10 6 here.…”

Section: Resultsmentioning

confidence: 99%

“…The search method in coarse acquisition can be the same as traditional algorithm. Without loss of generality, a fast acquisition algorithm without any prior knowledge is used as in [2]. Let f j denote DDC's local oscillator's frequency, and the acquisition algorithm proposed as follows:…”

Section: Proposed Folded Sampling Digital Receiver and Acquisition Scmentioning

confidence: 99%

“…The acquisition of DS/FH spread spectrum is an exciting research topic [1][2][3][4][5][6][7][8]. The search process is generally performed from two dimensions [1,2]: FH pattern and PN code phases.…”

Section: Introductionmentioning

confidence: 99%

“…The search process is generally performed from two dimensions [1,2]: FH pattern and PN code phases. The full parallel method, which detects the two dimensions simultaneously, is infeasible while PN code is long for its extremely large hardware consumption [3].…”

Section: Introductionmentioning

confidence: 99%

“…It is convenient in implementation but slow in acquisition especially when the FH and PN code is long. To overcome this demerit, a fast scanning and waiting method is thus provided [2]. The performance is measured with detection probability and mean acquisition time.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Fast Acquisition for DS/FH Spread Spectrum Signals by Using Folded Sampling Digital Receiver

Xiao¹,

Yang²,

Zou³

2018

Proceedings of Information Science and Cloud Computing — PoS(ISCC 2017)

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A fast acquisition method is proposed to improve the detection speed of direct sequence/ frequency hopping spread spectrum (DS/FHSS) communication system. A novel digital wideband receiver by using folded sampling is presented to reduce the searched hopping frequencies in coarse acquisition. There are two selective filters connected with the RF downconverter in the new scheme, one of which is wideband and the other is narrow and similar as the traditional one. The acquisition is achieved on two stages: firstly, the folded sampling is used when the wideband filter is selected and the hopping frequencies on multiple Nyquist zones are folded together on the first one, then fine acquisition is performed while the narrow band filter is selected. The detection performance of the propose method is deduced through state flow graph and verified by simulation. The results show the new method performs better when compared with the traditional one. It can effectively promote the detection speed with few detection performance loss.

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Section: Resultsmentioning

confidence: 99%

Section: Proposed Folded Sampling Digital Receiver and Acquisition Scmentioning

confidence: 99%