Efficient Channel Estimation for Universal Filtered Multicarrier Systems
| Autor: | Tung-Chou Chen, Tsui-Tsai Lin |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Frequency response
Computational complexity theory Mean squared error Computer Networks and Communications Orthogonal frequency-division multiplexing Computer science Fast Fourier transform Computer Science Applications Neumann series Control and Systems Engineering Electrical and Electronic Engineering Algorithm Electrical efficiency Computer Science::Information Theory Information Systems Communication channel |
| Zdroj: | IEEE Systems Journal. 15:3793-3796 |
| ISSN: | 2373-7816 1932-8184 |
| DOI: | 10.1109/jsyst.2020.3019289 |
| Popis: | In this paper, we propose an efficient channel estimation (CE) to determine the frequency response of overall subcarriers for universal filtered multicarrier systems, which promises excellent performance without a significant increase in computational complexity. Specifically, based on the even-subcarrier received signal, we design a pilot-assisted scheme combined with a partial inverse fast Fourier transform operation to obtain an estimate of the channel impulse response. Then, to alleviate the power efficiency loss caused by discarding the odd subcarriers, a performance-enhanced CE using the Neumann series expansion technique is proposed. This provides a performance comparable to that of the maximum likelihood-based approach involving a prohibitively burdensome computation. A closed-form mean square error expression and computational complexity analysis are derived to quantify the achievable advantages. Simulation study confirms the effectiveness of the proposed CE. |
| Databáze: | OpenAIRE |
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