Name
Abstract | ||
|---|---|---|
Acquisition of code division multiple access (CDMA) signals can be carried out using fixed or variable dwell times. The choice of acquisition strategy is a trade-off between performance and computational complexity, and a number of variable parameters (number of dwells, dwell lengths and thresholds) must be carefully designed. In this work, the performance of a variable dwell time coincidence detector is analysed in terms of its mean time to verify the acquisition of Global Positioning System (GPS) L1 C/A signals. A new expression for the variance of the coincidence detector dwell time is derived. A general framework for the optimisation of dwell parameters for the coincidence detector is outlined. Both immediate- and non-immediate reject cases are analysed and compared to the fixed dwell time single dwell strategy, which is, itself, a special case of the coincidence detector. Case-specific numerical optimisation results are illustrated across a range of signal-to-noise ratios and general rules-of-thumb for the best choice of parameters are highlighted. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1109/TCOMM.2011.113011.100132 | IEEE Transactions on Communications |
Keywords | Field | DocType |
Detectors,Optimization,Global Positioning System,Correlation,Correlators,Noise,Multiaccess communication | Dwell time,Correlation function (quantum field theory),Detection theory,Computer science,Control theory,Electronic engineering,Global Positioning System,Estimation theory,Code division multiple access,Detector,Constrained optimization | Journal |
Volume | Issue | ISSN |
60 | 1 | 0090-6778 |
Citations | PageRank | References |
2 | 0.42 | 16 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Niamh O'Mahony | 1 | 18 | 2.62 |
| Colin C. Murphy | 2 | 155 | 18.19 |