TY - GEN
T1 - Preconditioned and rank-flexible block conjugate gradient implementations of MIMO wiener decision feedback equalizers
AU - Groh, Ingmar
AU - Dietl, Guido
AU - Utschick, Wolfgang
PY - 2006
Y1 - 2006
N2 - In this paper, we present two extensions of the Block Conjugate Gradient (BCG) algorithm, a method which exploits the concept of block Krylov subspaces. First, we extend the BCG algorithm such that it is more flexible concerning the dimension of the block Krylov subspace. Second, a computationally efficient Preconditioned BCG (PBCG) algorithm is introduced which turns out to outperform the standard BCG algorithm concerning the complexity-performance ratio. Hence, we provide a powerful implementation for reduced-rank signal processing in the Minimum Mean Square Error (MMSE) sense. Simulation results show the gain in rank-flexibility and convergence speed.
AB - In this paper, we present two extensions of the Block Conjugate Gradient (BCG) algorithm, a method which exploits the concept of block Krylov subspaces. First, we extend the BCG algorithm such that it is more flexible concerning the dimension of the block Krylov subspace. Second, a computationally efficient Preconditioned BCG (PBCG) algorithm is introduced which turns out to outperform the standard BCG algorithm concerning the complexity-performance ratio. Hence, we provide a powerful implementation for reduced-rank signal processing in the Minimum Mean Square Error (MMSE) sense. Simulation results show the gain in rank-flexibility and convergence speed.
UR - http://www.scopus.com/inward/record.url?scp=33947638882&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:33947638882
SN - 142440469X
SN - 9781424404698
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - IV441-IV444
BT - 2006 IEEE International Conference on Acoustics, Speech, and Signal Processing - Proceedings
T2 - 2006 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2006
Y2 - 14 May 2006 through 19 May 2006
ER -