无零填充加窗OTSM中误码率与带宽效率的权衡研究
On the BER vs. Bandwidth-Efficiency Trade-offs in Windowed OTSM Dispensing with Zero-Padding
AI总结：
针对强相位噪声场景，提出无零填充的实用信令加窗OTSM方案，推导闭式BER上界，验证中高SNR下上界准确性及窗函数可实现OOBE与BER的良好权衡。
摘要：
本文针对强相位噪声（PHN）场景，提出了一种采用实用信令函数的正交时间序列复用（OTSM，即orthogonal time sequency multiplexing）方案。利用延迟-序列域（DS）、时频域（TF）与时域之间的变换关系，我们首先构建了所提OTSM系统的DS域输入输出关系，该系统摒弃了传统的零填充操作以提升频谱效率。随后推导了无条件成对错误概率，进而得到闭式误码率（BER）上界。此外，我们还对比了基于多种实用信令函数的OTSM系统误码率性能。仿真结果表明，在中高信噪比（SNR）条件下，推导得到的上界可准确预测误码率性能，而采用实用窗函数能够在带外辐射（OOBE）与误码率之间实现极具吸引力的权衡。
英文摘要：
An orthogonal time sequency multiplexing (OTSM) scheme using practical signaling functions is proposed under strong phase noise (PHN) scenarios. By utilizing the transform relationships between the delay-sequency (DS), time-frequency (TF) and time-domains, we first conceive the DS-domain input-output relationship of our OTSM system, where the conventional zero-padding is discarded to increase the spectral efficiency. Then, the unconditional pairwise error probability is derived, followed by deriving the bit error ratio (BER) upper bound in closed-form. Moreover, we compare the BER performance of our OTSM system based on several practical signaling functions. Our simulation results demonstrate that the upper bound derived accurately predicts the BER performance in the case of moderate to high signal-to-noise ratios (SNRs), while harnessing practical window functions is capable of attaining an attractive out-of-band emission (OOBE) vs. BER trade-off.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
