VLSI implementation for interpolation-based matrix inversion for MIMO-OFDM receivers

Authors:
Jung Hoon Lee;Jin Lee;Sin-Chong Park
Affiliations:
System Integration Technology Institution, Information and Communications University, Munjiro, Yuseong-gu, Daejeon, Korea;System Integration Technology Institution, Information and Communications University, Munjiro, Yuseong-gu, Daejeon, Korea;System Integration Technology Institution, Information and Communications University, Munjiro, Yuseong-gu, Daejeon, Korea
Venue:
IMCAS'07 Proceedings of the 6th WSEAS International Conference on Instrumentation, Measurement, Circuits and Systems
Year:
2007

Citing 1
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WSEAS TRANSACTIONS on COMMUNICATIONS

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Abstract

Matrix inversion block is one of the computationally intensive blocks in communications system. To reduce the size of hardware implementation is a challenging problem. In MIMO-OFDM system, the receiver which uses zero-forcing (ZF) or minimum mean square error (MMSE) scheme should calculate the inverse matrices of all sub-carriers. This paper proposes VLSI architecture for interpolation-based matrix inversion. For the result, more than 70% area was reduced by adopting interpolation-based scheme in 4×4 matrix inversion processing of IEEE 802.11n receiver.