广义离散多音调制中窄带干扰的补偿

2004 International Conference on Signal Processing and Communications, 2004. SPCOM '04. Pub Date : 2004-12-11 DOI:10.1109/SPCOM.2004.1458345

N. Fliege, J. Schwartz

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引用次数: 0

摘要

通用DMT (GDMT)在铜缆上提供低延迟高数据速率传输，为许多对称数据业务提供了高达2mbps的解决方案。低延迟是通过短FFT，短保护间隔和在频域通过特殊的均衡器补偿(EC)矩阵补偿剩余的ISI/ICI来实现的。本文介绍了EC矩阵的另一个有用的应用。使用相同的矩阵拓扑，我们可以证明窄带干扰可以几乎完全消除，这是DMT和OFDM系统中由于FFT的有限选择性而造成的严重问题。该矩阵具有稀疏矩阵拓扑结构，具有很高的频谱效率，在实际应用中具有重要意义。

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Compensation of narrowband interference in generalized discrete multitone modulation

The generalized DMT (GDMT) provides a low latency high data rate transmission over copper cables constituting a solution for many symmetrical data services up to 2 Mbps. The low latency is realized by a short FFT, short guard intervals and by compensating the remaining ISI/ICI by means of a special equalizer compensation (EC) matrix in the frequency domain. In this paper, a further useful application of the EC matrix is presented. Using the same matrix topology, we can show that narrowband interference, which is a severe problem in DMT and OFDM systems due to the limited selectivity of the FFT, can be nearly perfectly eliminated. The EC matrix possesses a sparse matrix topology and thus offers high spectral efficiency which is important for practical applications.

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来源期刊

2004 International Conference on Signal Processing and Communications, 2004. SPCOM '04.

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