Multi-beam constant modulus adaptive arrays in real-valued arithmetic

The paper presents an algorithm for the computation of weights in a multi-beam adaptive array. The algorithm is based on the Linearly Constrained Recursive Least Square adaptive filtering of the Constant Modulus signals. It uses real-valued arithmetic and has less computational complexity comparing...

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Vydané v:East-West Design & Test Symposium (EWDTS 2013) s. 1 - 6
Hlavný autor: Djigan, Victor I.
Médium: Konferenčný príspevok..
Jazyk:English
Vydavateľské údaje: IEEE 01.09.2013
Predmet:
Adaptive arrays
Adaptive filters
Interference
Kalman filters
Simulation
Vectors
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Popis
Shrnutí:The paper presents an algorithm for the computation of weights in a multi-beam adaptive array. The algorithm is based on the Linearly Constrained Recursive Least Square adaptive filtering of the Constant Modulus signals. It uses real-valued arithmetic and has less computational complexity comparing with the same complex-valued algorithm. A computational procedure of the new algorithm, its complexity estimation and simulation results are also presented. Comparing to the complex-valued algorithm the new one has a smaller transient response and provides in average 2... 4 dB deeper steady-state directional pattern levels towards the interferences.
DOI:10.1109/EWDTS.2013.6673181