Broadband beamspace DOA estimation: frequency-domain and time-domain processing approaches
EURASIP Journal on Applied Signal Processing
Reduced computational complexity beamspace beamforming design for MIMO multicast systems
NTMS'09 Proceedings of the 3rd international conference on New technologies, mobility and security
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Motivated by the superior performance and reduced computational complexity of beamspace and root implementations of eigenstructure techniques, a beamspace root modification of the pseudorandom joint estimation strategy (PR-JES) is developed. The essence of the PR-JES is to generate the eigenstructure-based estimator bank for a given sample covariance or data matrix. Appropriately combining the results of “parallel” underlying estimators, the PR-JES removes outliers and improves the threshold performance. In the case of a nonuniform array, the interpolated array approach is exploited to enable the application of root underlying techniques. Simulations show that the proposed beamspace root implementation outperforms spectral elementspace PR-JES significantly and achieves a performance similar to or better than that of the stochastic maximum likelihood (ML) method