OFDM的二维导频符号辅助调制分析

1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338) Pub Date : 1997-12-17 DOI:10.1109/ICPWC.1997.655481

R. Nilsson, O. Edfors, Magnus Sandell, P. Börjesson

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引用次数: 78

摘要

本文分析了无线正交频分复用(OFDM)中的二维导频符号辅助调制(PSAM)。2D-PSAM已被几位作者建议用于无线OFDM，并包含在欧洲数字视频广播标准的初步草案中。我们将单载波PSAM的分析推广到OFDM的二维时频格。我们分析了两种不同信道估计器的2D-PSAM:一种是性能良好但复杂度高的信道估计器，另一种是复杂度低的次优信道估计器。我们验证了一个好的经验法则，即根据2D采样定理的要求，在时间和频率上将导频放置至少两倍的距离。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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An analysis of two-dimensional pilot-symbol assisted modulation for OFDM

In this paper we analyze two-dimensional (2D) pilot-symbol assisted modulation (PSAM) for wireless orthogonal frequency-division multiplexing (OFDM). 2D-PSAM has been suggested for wireless OFDM by several authors and is included in a preliminary draft of the standard for European digital video broadcast. We generalize the analysis of single-carrier PSAM to the 2D time-frequency lattice of OFDM. We analyze 2D-PSAM for two different channel estimators: one with good performance and high complexity and one suboptimal with low complexity. We verify that a good rule of thumb is to place the pilots at least as twice as close, in time and frequency, as required by the 2D sampling theorem.

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来源期刊

1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338)

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