TY - GEN
T1 - A constrained reference signal based beamformer based on symmetrically distributed antenna arrays
AU - Zhang, Lei
AU - Liu, Wei
AU - Langley, Richard J.
PY - 2010/12
Y1 - 2010/12
N2 - A class of reference signal based (RSB) beamforming algorithms is proposed based on a symmetrically distributed array (SDA) by constraining its weight vector to a specific conjugate symmetric form, which is derived from the beamformer with a minimum mean square error (MSE). The effect of the additional constraint is equivalent to adding a second step in the derived adaptive algorithms. Moreover, since no direction of arrival (DOA) information of the desired signal is available, it leads to a two-stage structure for incorporating the imposed constraint. Compared to the traditional algorithms, the proposed ones, including an LMS (least mean square) based algorithm and an RLS (recursive least square) based algorithm, can achieve a faster convergence speed and a lower steady state mean square error (MSE), given the same stepsize.
AB - A class of reference signal based (RSB) beamforming algorithms is proposed based on a symmetrically distributed array (SDA) by constraining its weight vector to a specific conjugate symmetric form, which is derived from the beamformer with a minimum mean square error (MSE). The effect of the additional constraint is equivalent to adding a second step in the derived adaptive algorithms. Moreover, since no direction of arrival (DOA) information of the desired signal is available, it leads to a two-stage structure for incorporating the imposed constraint. Compared to the traditional algorithms, the proposed ones, including an LMS (least mean square) based algorithm and an RLS (recursive least square) based algorithm, can achieve a faster convergence speed and a lower steady state mean square error (MSE), given the same stepsize.
UR - http://www.scopus.com/inward/record.url?scp=78651421272&partnerID=8YFLogxK
U2 - 10.1109/LAPC.2010.5666788
DO - 10.1109/LAPC.2010.5666788
M3 - Conference article published in proceeding or book
AN - SCOPUS:78651421272
SN - 9781424473052
T3 - 2010 Loughborough Antennas and Propagation Conference, LAPC 2010
SP - 121
EP - 124
BT - 2010 Loughborough Antennas and Propagation Conference, LAPC 2010
T2 - 6th Loughborough Antennas and Propagation Conference, LAPC 2010
Y2 - 8 November 2010 through 9 November 2010
ER -