An improved adaptive constrained constant modulus reduced-rank algorithm with sparse updates for beamforming
| العنوان: | An improved adaptive constrained constant modulus reduced-rank algorithm with sparse updates for beamforming |
|---|---|
| المؤلفون: | Yunlong Cai, Haijian Zhang, Boya Qin |
| المصدر: | Multidimensional Systems and Signal Processing. 27:321-340 |
| بيانات النشر: | Springer Science and Business Media LLC, 2014. |
| سنة النشر: | 2014 |
| مصطلحات موضوعية: | Beamforming, 020301 aerospace & aeronautics, Mathematical optimization, Rank (linear algebra), Computational complexity theory, Applied Mathematics, Stability (learning theory), 020206 networking & telecommunications, 02 engineering and technology, Filter (signal processing), Computer Science Applications, 0203 mechanical engineering, Artificial Intelligence, Hardware and Architecture, Bounded function, Signal Processing, 0202 electrical engineering, electronic engineering, information engineering, Constant (mathematics), Algorithm, Adaptive beamformer, Software, Information Systems, Mathematics |
| الوصف: | In this work, we propose an adaptive set-membership (SM) reduced-rank filtering algorithm using the constrained constant modulus criterion for beamforming. We develop a stochastic gradient type algorithm based on the concept of SM techniques for adaptive beamforming. The filter weights are updated only if the bounded constraint cannot be satisfied. We also propose a scheme of time-varying bound and incorporate parameter dependence to characterize the environment for improving the tracking performance. A detailed analysis of the proposed algorithm in terms of computational complexity and stability is carried out. Simulation results verify the analytical results and show that the proposed adaptive SM reduced-rank beamforming algorithms with a dynamic bound achieve superior performance to previously reported methods at a reduced update rate. |
| تدمد: | 1573-0824 0923-6082 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::20761d0bb2111b19720afbd975eeb4d3Test https://doi.org/10.1007/s11045-014-0304-5Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........20761d0bb2111b19720afbd975eeb4d3 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15730824 09236082 |
|---|