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SC-FDE Technology in LTE Uplink and Its Realization by Picoarray DSP

Author: CaoZhiSun
Tutor: LiQingXia
School: Huazhong University of Science and Technology
Course: Communication and Information System
Keywords: SC-FDE OFDM 3GPP LTE Array DSP
CLC: TP368.12
Type: Master's thesis
Year: 2009
Downloads: 71
Quote: 1
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Abstract


Single carrier frequency domain equalization (SC-FDE) technology to overcome the shortcomings of the high peak to average power and the high susceptivity of carrier frequency offset and phase noise by the orthogonal frequency division multiplexing (OFDM) technology, both to have the advantages of the high spectrum efficiency technology and combatting inter-symbol interference and the capability and scalability of bandwidth by OFDM, has become a key competitive technology of the next-generation mobile communication system.In the 3GPP long term evolution (LTE) ,there are four candidates technologies for uplink: OFDMA, SC-FDMA, MC-WCDMA (multi-carrier WCDMA) and MC-TD-SCDMA (multi-carrier TD-SCDMA), the latter two are not to use OFDM as the core technology, which is not conducive to the evolution of B3G and compatibility as spectrum efficiency is lower, they were negatived. Due to the limited power of the uplink, SC-FDMA enjoying the advantages of low PAPR ,has gradually been accepted as the first uplink technology. Therefore, in LTE uplink SC-FDMA the use of frequency domain equalization technology has unique advantages and conditions.This paper, as the background surrounding of the "985" project, "RoF-based platform for mobile communications research innovation", has two aspects of the single-carrier frequency domain equalization key technologies and LTE uplink baseband hardware design of the overall program. On the one hand, the single-carrier frequency domain equalization technology is studied in the fight against multi-path channel the performance of inter-symbol interference by the simulation that the frequency domain equalizer of the difference between single-carrier system, but also carry out a detailed comparison and simulation from the structure, performance and complexity to the orthogonal frequency division multiplexing.On the other hand, the paper expatiate on picoChip provides an array of DSP theory, on its hardware platforms and development process, discuss an array of mobile baseband DSP design unique advantage based on a DSP array using frequency domain equalization based on the LTE uplink technology program, and the module code of the frequency domain equalization as well as its verification on the picoChip’s platform.

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