In this letter, we propose a dual-polarized precoding-aided spatial modulation (DPPSM) scheme, which introduces the polarization dimension into conventional precoding-aided spatial modulation (PSM) to transmit an additional information bit, avoiding the occupation of additional physical space while offering extra transmit diversity. We obtain an upper bound on the average bit error probability (ABEP) of the proposed DPPSM scheme over correlated fading channels. We also derive an approximate upper bound on the ABEP to show the diversity order. Simulation results show that the upper bound is tight for a high signal-to-noise ratio (SNR) range, and the bit error rate (BER) performance of the proposed DPPSM scheme is better than that of the conventional PSM scheme at the same spectral efficiency when equipped with an equal amount of antennas. Furthermore, the proposed DPPSM scheme is more robust to Gaussian channel error when the channel estimation imperfection is considered.

中文翻译：

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在相关信道上使用双极化天线进行预编码辅助空间调制

在这封信中，我们提出了一种双极化预编码辅助空间调制（DPPSM）方案，该方案将极化维度引入传统的预编码辅助空间调制（PSM）中以传输额外的信息位，避免占用额外的物理空间，同时提供额外的传输分集。我们获得了所提出的 DPPSM 方案在相关衰落信道上的平均误码率 (ABEP) 的上限。我们还推导出了 ABEP 的近似上限以显示分集顺序。仿真结果表明，对于高信噪比 (SNR) 范围，上限很紧，并且在相同频谱条件下，所提出的 DPPSM 方案的误码率 (BER) 性能优于传统 PSM 方案。配备等量天线时的效率。