TY - JOUR
T1 - Inverting overdetermined Toeplitz systems with application to blind block-adaptive equalization
AU - Scaglione, Anna
AU - Barbarossa, Sergio
AU - Giannakis, Georgios B.
PY - 1998
Y1 - 1998
N2 - Linear channel equalization in block transmission systems amounts to inverting Toeplitz systems of linear equations. Motivated by limitations of a recent blind block equalizer, we derive properties and investigate the class of tall Toeplitz matrix inverses which themselves exhibit (even approximate) Toeplitz structure. The class is characterized by the size of leading and trailing all-zero block submatrices, and interesting links as well as optimal choices of the size parameter are established with the number of maximum-phase zeros of the underlying channel transfer function. Exploiting the properties of such equalizers we derive a direct blind adaptive equalizer and illustrate superiority over competing approaches. It is also shown that the optimum delay for blind block equalization corresponds to the number of maximum-phase channel zeros.
AB - Linear channel equalization in block transmission systems amounts to inverting Toeplitz systems of linear equations. Motivated by limitations of a recent blind block equalizer, we derive properties and investigate the class of tall Toeplitz matrix inverses which themselves exhibit (even approximate) Toeplitz structure. The class is characterized by the size of leading and trailing all-zero block submatrices, and interesting links as well as optimal choices of the size parameter are established with the number of maximum-phase zeros of the underlying channel transfer function. Exploiting the properties of such equalizers we derive a direct blind adaptive equalizer and illustrate superiority over competing approaches. It is also shown that the optimum delay for blind block equalization corresponds to the number of maximum-phase channel zeros.
UR - http://www.scopus.com/inward/record.url?scp=0032259265&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032259265&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:0032259265
SN - 1058-6393
VL - 2
SP - 1134
EP - 1137
JO - Conference Record of the Asilomar Conference on Signals, Systems and Computers
JF - Conference Record of the Asilomar Conference on Signals, Systems and Computers
T2 - Proceedings of the 1998 32nd Asilomar Conference on Signals, Systems & Computers. Part 1 (of 2)
Y2 - 1 November 1998 through 4 November 1998
ER -