We consider vertical Bell laboratories layered space-time architecture for offset quadrature amplitude modulation based filter bank multicarrier (FBMC) systems, and propose two different receivers. We first investigate a low-complexity QR decomposition (QRD) based conventional minimum mean square error (MMSE) successive interference cancellation (C-MMSE-SIC) receiver. The intrinsic interference in FBMC systems severely degrades the symbol error rate (SER) of the C-MMSE-SIC receiver. By exploiting the overlapping nature of neighboring symbols in an FBMC system, and the fact that the desired symbol in an FBMC system interferes with the symbols in a small neighborhood, we propose novel low-complexity intrinsic interference estimation (IIE) based sequential MMSE-SIC (IIE-SMMSE-SIC) receivers with QRD and its sorted version. We show that the IIE-SMMSE-SIC receivers, with similar complexity order as that of the C-MMSE-SIC, have lower SER.

中文翻译：

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VBLAST FBMC-OQAM 系统接收器

我们考虑了用于基于偏置正交幅度调制的滤波器组多载波 (FBMC) 系统的垂直贝尔实验室分层时空架构，并提出了两种不同的接收器。我们首先研究了一种基于低复杂度 QR 分解 (QRD) 的传统最小均方误差 (MMSE) 连续干扰消除 (C-MMSE-SIC) 接收器。FBMC 系统中的固有干扰严重降低了 C-MMSE-SIC 接收器的符号错误率 (SER)。通过利用 FBMC 系统中相邻符号的重叠特性，以及 FBMC 系统中所需符号干扰小邻域中的符号这一事实，我们提出了基于序列 MMSE-SIC 的新型低复杂度内在干扰估计 (IIE) (IIE-SMMSE-SIC) 带有 QRD 的接收器及其分类版本。