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DFT beamforming for more accurate estimate of signal DOA with application to improving DS/CDMA receiver performance

DFT beamforming for more accurate estimate of signal DOA with application to improving DS/CDMA receiver performance

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Discrete Fourier transforms (DFTs) may be used to create fixed orthogonal beams, and the receiver can then select the beam with the strongest desired signal to provide discrimination against interference. A more accurate method for locating the desired signal and its application in speeding up the adaptive convergence rate in a direct-sequence code division multiple access receiver are described.

Inspec keywords: convergence of numerical methods; radio receivers; digital radio; code division multiple access; array signal processing; direction-of-arrival estimation; discrete Fourier transforms

Other keywords: fixed orthogonal beams; code division multiple access receiver; adaptive convergence rate; discrete Fourier transforms; signal DOA estimation; direct-sequence CDMA; receiver performance improvement; DS/CDMA receiver; DFT beamforming

Subjects: Multiple access communication; Signal processing and detection; Radio links and equipment; Integral transforms in numerical analysis

References

    1. 1)
      • V.D. Pham , T.B. Vu . Integrated space-time equaliser for DS/CDMA receiver with unequal reducedlengths. Electron. Lett. , 20 - 22
    2. 2)
      • T.B. Vu , G. Jonas . A DSP-based direction finder. Int. J. Electron. , 6 , 1133 - 1142
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