An iterative frequency domain equalization approach for coded single-carrier block transmissions over frequency selective channels is developed by using the recently proposed generalized approximate message passing (GAMP) algorithm. Compared with the low-complexity iterative frequency domain linear minimum mean square error (FD-LMMSE) equalization, the proposed approach can achieve significant performance gain with slight complexity increase.
Funding
Low-complexity factor-graph-based receiver design for bandwidth-efficient communication systems over doubly selective channels
Q. Guo, D. Huang, J. Xi, S. Nordholm & Y. Yu, "Iterative frequency domain equalization with generalized approximate message passing," IEEE Signal Processing Letters, vol. 20, (6) pp. 559-562, 2013.