A technique for demapping dual carrier modulated UWB OFDM signals with improved performance
| Autor: | Wenzhen Li, M. Tomisawa, Zhongjun Wang, Lee Guek Yeo, Yujing Ting, Yanxin Yan |
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| Rok vydání: | 2006 |
| Předmět: |
Computer science
Orthogonal frequency-division multiplexing ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Bandwidth (signal processing) Data_CODINGANDINFORMATIONTHEORY Multiplexing Frequency-division multiplexing Channel state information Modulation Baseband Electronic engineering Fading Forward error correction Error detection and correction Decoding methods Computer Science::Information Theory |
| Zdroj: | VTC-2005-Fall. 2005 IEEE 62nd Vehicular Technology Conference, 2005.. |
| DOI: | 10.1109/vetecf.2005.1557467 |
| Popis: | In an orthogonal frequency-division multiplexing (OFDM) based wireless communication system, the magnitude of Channel State Information (CSI) can be incorporated into the soft-decision decoding process to achieve better error correction performance (2). However, with recent introduction of the Dual-carrier modulation (DCM) scheme in the multi-band OFDM UWB system, direct use of the conventional CSI-aided soft-decision modulation demapping is found to be unsuitable in this case. In this paper, the DCM demapping related issues are investigated. Based on a two-dimensional weighting strategy, a new solution for using CSI-aided demapping in a multi-band OFDM UWB system is proposed. Simulation results show that the proposed technique can significantly improve the soft-decision decoding performance in this case. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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