具有预编码短保护间隔的全双工OFDM放大转发中继系统联合设计
A Joint Design for Full-duplex OFDM AF Relay System with Precoded Short Guard Interval
AI总结：
本文针对全双工OFDM放大转发中继系统中的残余自干扰问题，将等效信道建模为IIR信道，提出预编码、功率增益控制与均衡的联合设计，缩短保护间隔以提升频谱效率，并验证了其误码率性能优于现有方案。
摘要：
带内全双工中继（FDR）作为提高无线通信网络覆盖范围和频谱效率的有效解决方案，已引起广泛关注。FDR传输的基本问题是如何消除固有的自干扰，并在中继处重新利用残余自干扰（RSI）以提升端到端性能。考虑到FDR处的RSI，整体等效信道可以建模为无限冲激响应（IIR）信道。针对该IIR信道，本文提出了一种协作OFDM中继系统的预编码、功率增益控制和均衡的联合设计。与传统OFDM系统相比，所提设计的保护间隔长度可以显著缩短，从而提高频谱效率。通过分析噪声源，本文评估了所提方案的信噪比（SNR），并提出了一种FDR处的功率增益控制算法。与现有方案相比，所提方案表现出更优的误码率（BER）性能。
英文摘要：
In-band full-duplex relay (FDR) has attracted much attention as an effective solution to improve the coverage and spectral efficiency in wireless communication networks. The basic problem for FDR transmission is how to eliminate the inherent self-interference and re-use the residual self-interference (RSI) at the relay to improve the end-to-end performance. Considering the RSI at the FDR, the overall equivalent channel can be modeled as an infinite impulse response (IIR) channel. For this IIR channel, a joint design for precoding, power gain control and equalization of cooperative OFDM relay systems is presented. Compared with the traditional OFDM systems, the length of the guard interval for the proposed design can be distinctly reduced, thereby improving the spectral efficiency. By analyzing the noise sources, this paper evaluates the signal to noise ratio (SNR) of the proposed scheme and presents a power gain control algorithm at the FDR. Compared with the existing schemes, the proposed scheme shows a superior bit error rate (BER) performance.
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。
