Jae-Hyun Park, Jaeyoon Lee, Sang-Won Lee, Songnam Hong, Dong-joon Shin
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引用次数: 0
摘要
OFDM的分组编码方案结合了Golay互补序列和Reed-Muller码(GCRM)，将PAPR限制在3db以内，并具有纠错能力，最近被引入[J]。A. Davis et al.(1999)。然而，GCRM的编码增益无法克服OFDM中频率误差带来的ICI。本文提出了一种新的ICI自抵消组合格式[Y。赵等(2001)[j]。Fu et al.(2002)]，并提出了GCRM代码。分析结果表明，该方案可将PAPR限制在6 dB以内，并可通过TWTA补偿非线性失真。验证了由于TWTA的回退值较低，我们的方案比GCRM具有更好的性能。
ICI self cancellation - Golay complementary Reed-Muller code scheme for OFDM systems
The block coding scheme for OFDM, which is combining Golay complementary sequence with Reed-Muller code (GCRM) that limits PAPR up to 3 dB with error-correcting capability, has been introduced recently [J. A. Davis et al. (1999)]. However, the coding gain of GCRM cannot overcome ICI caused by frequency error in OFDM. In this paper, a new combined scheme of ICI self-cancellation [Y. Zhao et al. (2001)] [Y. Fu et al. (2002)] and GCRM code is proposed. This scheme is analyzed to show that it limits PAPR up to 6 dB and can compensate the nonlinear distortion by TWTA. It is also verified that for the low back-off value of TWTA, our scheme shows better performance than GCRM.
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