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arXiv 2104.09875cs.ITmath.IT
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多级极化码空移键控

Multilevel Polar Coded Space-Shift Keying

Muhammad Zaeem Hasan, Nemanja Stefan Perović, Mark F. Flanagan

摘要:

多级编码(MLC)是一种编码调制技术,它可以在一定范围的通信信道上获得优异的性能。极化码已经被证明与使用MLC的通信系统非常兼容,因为分量极化码的速率分配遵循极化码中固有的自然极化。基于MLC的技术尚未在使用空间调制(SM)的系统中被研究。SM使得极化码设计困难,因为空间比特实际上选择用于传输的信道索引。为了解决这个问题,我们提出了一个基于Monte Carlo的评估的遍历能力的容量规则下的空间移位键控(SSK)系统,其中我们也利用一个单一的天线激活近似的传输信道的多级极化码的设计下的各个比特级别。我们的仿真结果表明,多级极化编码的16 $\times$ 1 SSK系统在$10^{-4}$的误出错率(BER)下比使用比特交织极化编码调制的相应系统性能好2.9 dB。

英文摘要:

Multilevel coding (MLC) is a coded modulation technique which can achieve excellent performance over a range of communication channels. Polar codes have been shown to be quite compatible with communication systems using MLC, as the rate allocation of the component polar codes follows the natural polarization inherent in polar codes. MLC based techniques have not yet been studied in systems that use spatial modulation (SM). SM makes the polar code design difficult as the spatial bits actually select a channel index for transmission. To solve this problem, we propose a Monte Carlo based evaluation of the ergodic capacities for the individual bit levels under the capacity rule for a space-shift keying (SSK) system, where we also make use of a single antenna activation to approximate the transmission channel for the design of the multilevel polar code. Our simulation results show that the multilevel polar coded 16 $\times$ 1 SSK system outperforms the corresponding system that uses bit-interleaved polar coded modulation by 2.9 dB at a bit-error rate (BER) of $10^{-4}$.

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