Hardware Architecture of Improved Tomlinson-Harashima Precoding for Downlink MC-CDMA
Kuang-Hao Lin, Hsin-Lei Lin, KyungHi Chang, Ching-Fen Wu · 2006
In this paper, Tomlinson-Harashima precoding (THP) algorithm for the downlink of MC-CDMA system, in which multiple-access interference and possible complexity in the mobile terminal are major burdens, is investigated. A new THP based on the minimum mean-square error (MMSE) criterion is derived. It has the better performance than the zero forcing (ZF) THP. The authors proposed the hardware architecture of MMSE THP at the transmitter and analyzed the required word length. The pipeline and parallel processes are employed to efficiently save time of executing procedure