Work place: Vice Chancellor ANNA University of Technology Tirunelveli, INDIA



Research Interests: Network Security, Image Processing, Data Structures and Algorithms


Dr.M.Rajaram is vice chancellor of Anna University of technology Thirunelveli India. Previously he worked as Professor and Head of the Department of EEE in GCE, Thirunelveli. He has more than twenty five years of teaching and research experience. His research focuses on network security, image and video processing, FPGA architectures and power electronics.

Author Articles
Performance of Frequency Domain DFE Using Subcarrier Allocation


DOI: https://doi.org/10.5815/ijitcs.2012.01.03, Pub. Date: 8 Feb. 2012

Due to the usage of single carrier, the performance of SC-FDMA systems degrades in deep frequency selective fading channels. In this paper, we propose a structure of equalizer based on frequency domain decision feedback which could be used for multi-user SC-FDMA systems. This algorithm is applicable to various carrier allocations in multi-user systems such as localized allocation, distributed allocation, and frequency-hopping (FH) allocation. To reduce the complexity, it is not necessary to derive the inversion of matrix, which is required in the traditional decision feedback equalizer for single carrier frequency domain equalization (SC-FDE-DFE). Simulation results show that equalization has been achieved for FD-LE and FD-DFE with distribution mapping. This structure can be used in the broadcasting uplink channels with SC-FDMA scheme.

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