Reduction of multi-path effect based on correlation decomposition in a DOA estimation system

Karimi, P ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1109/SPIS.2015.7422303
  3. Publisher: Institute of Electrical and Electronics Engineers Inc
  4. Abstract:
  5. The multi-path phenomenon is one of the main causes of error in Direction Of Arrival Estimation systems which are located in a complex environment. The received signal in this environment consists of Line Of Sight (LOS) and multi-path components which are delayed versions of the LOS signal with the amplitude and the phase depending on the path length. In order to eliminate the multi-path signal, it is necessary to estimate the amplitude, the phase, and the delay of the signal. To this end, a method based on correlation which has been already used to estimate amplitudes and delays of Line Of Sight and multi-path signals in GPS systems, is implemented. After this estimation process, a phase estimation algorithm is proposed in order to construct the multi-path signal replica adequately. Finally, by subtracting the estimated multi-path component from the total signal, the LOS component could be extracted. Simulations show that this algorithm eliminates adequately the multi-path component and results in a better DOA estimation
  6. Keywords:
  7. Multi-path elimination ; Intelligent systems ; Signal processing ; Complex environments ; Direction of arrival estimation ; Estimation process ; Multi-path components ; Multi-path effect ; Multipaths ; Phase estimation algorithms ; Signal correlation ; Direction of arrival
  8. Source: Signal Processing and Intelligent Systems Conference, 16 December 2015 through 17 December 2015 ; 2015 , Pages 10-14 ; 9781509001392 (ISBN)
  9. URL: http://ieeexplore.ieee.org/document/7422303