The pilot design for OFDM-OQAM in time-varying channels
| Autor: | Yu-Song Shi, Baoqing Li, Xiaobing Yuan |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Orthogonal frequency-division multiplexing
Computer science 020206 networking & telecommunications Data_CODINGANDINFORMATIONTHEORY 02 engineering and technology Interference (wave propagation) Power (physics) Frequency divider Interference (communication) Single antenna interference cancellation 0202 electrical engineering electronic engineering information engineering Electronic engineering Overhead (computing) 020201 artificial intelligence & image processing Quadrature amplitude modulation Communication channel |
| Zdroj: | 2017 International Conference on Wireless Communications, Signal Processing and Networking (WiSPNET). |
| DOI: | 10.1109/wispnet.2017.8300026 |
| Popis: | This paper focuses on time-varying channel estimation for orthogonal frequency division multiplexing-offset quadrature amplitude modulation (OFDM-OQAM) systems based on a known preamble. Through calculating the imaginary interference power of one-step neighborhood, the two pilot structures are optimized in different design criteria, and the detailed implementation steps are provided. Under the same amount of overhead, the channel estimation performance of OFDM-OQAM in time-varying channel is analyzed and simulated. The results demonstrate that the method of interference cancellation (ICM) has its advantages, and better performance is achieved by updating pilot structure according to channel conditions. In addition, OFDM-OQAM outperformes conventional OFDM systems in fast time-varying channels. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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