Blind, Adaptive, Per Tone Equalization for Multicarrier Receivers
Richard Kipp Martin, C.R. Johnson · 2002
Abstract — This paper proposes the application of traditional blind, adaptive algorithms to the per tone structure for equalization in multicarrier receivers. It is shown that the per tone structure lends itself more readily than the TEQ structure to the appli-cation of the Constant Modulus Algorithm (CMA) and Decision-Directed LMS (DD-LMS). The result is that CMA and DD-LMS type algorithms can be derived for the per tone structure, resulting in low-complexity multicarrier equalization algorithms that are both blind and adaptive. The CM cost function is derived, and the effect of the symbol synchronization on the cost function is ex-plored. Simulations are used to compare the perfor-mance of CMA and DD-LMS to the optimal solution