Title :
Low complexity RLS channel estimation for SC-FDE in 60 GHz communications
Author :
Jiujiu Ai ; Guangrong Yue ; Xiantao Cheng ; Shaoqian Li
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
In this paper, we proposed a novel adaptive recursive least square structured frequency-domain channel estimation (RLS-SCE) for single carrier with frequency-domain equalization (SC-FDE) in 60 GHz high-data-rate wireless communications. It is low complexity due to the diagonal matrix inversion operation in frequency-domain and the length of the estimated parameters is as the same as the cyclic prefix (CP) which is far less than the length of data blocks. Moreover, a low complexity interpolation filter is exploited to interpolate the estimated parameters to the final channel frequency response (CFR). We have compared the complexity of our proposed RLS-SCE with that of the least squares(LS) and RLS unstructured channel estimation(UCE) in detail. The simulation results show our proposed RLS-SCE outperforming the LS-UCE and RLS-UCE in both mean square error (MSE) and bit error ratio (BER) performance.
Keywords :
channel estimation; error statistics; interpolation; least squares approximations; matrix inversion; mean square error methods; radio networks; RLS-SCE; RLS-UCE; SC-FDE; bit error ratio; channel frequency response; cyclic prefix; diagonal matrix inversion; frequency 60 GHz; high-data-rate wireless communications; low complexity interpolation filter; mean square error; recursive least square structured frequency-domain channel estimation; single carrier with frequency-domain equalization; 60GHz; RLS; SC-FDE; adaptive channel estimation;
Conference_Titel :
Communication Technology (ICCT), 2012 IEEE 14th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4673-2100-6
DOI :
10.1109/ICCT.2012.6511212
