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Theoretical bit error floor analysis of 16-QAM OFDM signal with channel estimation using polynomial interpolation

机译：基于多项式插值的信道估计16-QAM OFDM信号的理论误码本底分析

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This study deals with a bit error rate (BER) floor performance analysis for orthogonal frequency division multiplexing (OFDM) systems using pilot-aided channel estimation with polynomial interpolations. Such a performance analysis has been previously undertaken in the literature, but is limited to binary phase shift keying and 4-quadrature amplitude modulation (4-QAM) constellations. The main contribution of this study is then to analyse the BER floor achieved by a 16-QAM OFDM signal in a Rayleigh channel. To achieve this, the binary error probability is obtained by carrying out the analysis on maximum significant bits (MSB) and least significant bits (LSB). The MSB leads to the similar results as those obtained in 4-QAM, but very specific developments are required to obtain the error probability of the LSB. Numerical results show that the proposed BER performance analysis is valid for the 16-QAM constellation.
机译：这项研究处理正交频分复用（OFDM）系统的误码率（BER）底限性能分析，该系统使用多项式插值的导频辅助信道估计。这种性能分析先前已在文献中进行过，但仅限于二进制相移键控和4正交幅度调制（4-QAM）星座图。然后，这项研究的主要贡献是分析瑞利信道中16-QAM OFDM信号所达到的BER底限。为此，通过对最大有效位（MSB）和最低有效位（LSB）进行分析来获得二进制错误概率。 MSB得出的结果与4-QAM中获得的结果相似，但是需要非常特殊的开发才能获得LSB的错误概率。数值结果表明，所提出的BER性能分析对于16-QAM星座是有效的。

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