Pilot Position Selection and Detection for Channel Estimation of SC-FDE

• Published in: IEEE communications letters Vol. 12; no. 5; pp. 350 - 352
• Main Authors: KIM, Dongsik, KWON, Ui-Kun, IM, Gi-Hong
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.05.2008; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Carrier frequencies; Channel estimation; Channels; Detection, estimation, filtering, equalization, prediction; Discrete Fourier transforms; Distortion; Equalization; Exact sciences and technology; FETs; Frequency division multiplexing; Frequency domain analysis; Frequency domains; Information, signal and communications theory; OFDM; Peak to average power ratio; Pilots; Receivers; Samarium; Signal and communications theory; Signal, noise; Simulation; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Time division multiplexing; Transmission and modulation (techniques and equipments); Performance evaluation; Lower bound; Parameter estimation; Bit error rate; Frequency domain method; Iterative method; Blind identification; Single carrier; Equalization; SC-FDE; Carrier frequency; Simulation; Channel estimation; Position measurement; pilot position selection and detection techniques
• ISSN: 1089-7798; 1558-2558
• DOI: 10.1109/LCOMM.2008.080071

In this letter, we propose a simple pilot position selection/detection technique for channel estimation of single- carrier frequency domain equalization (SC-FDE). Unlike the conventional channel estimation techniques such as frequency domain superimposed pilot technique (FDSPT), the proposed scheme selects the pilot positions to minimize the distortion of original signals caused by the loss of useful data tones in frequency domain. The corresponding receiver structure is also presented, where the pilot positions are blindly detected and the distorted data symbols are iteratively reconstructed. Simulation results show that the proposed system gives better BER performance than the FDSPT and approaches the lower bound of SC-FDE.