Successive relaying can improve the transmission rate by allowing the source and relays to transmit messages simultaneously, but it may cause severe inter-relay interference (IRI). IRI cancellation schemes have been proposed to mitigate IRI. However, interference cancellation methods have a high risk of error propagation, resulting in a severe transmission rate loss in finite blocklength regimes. Thus, jointly decoding for successive relaying with finite-blocklength coding (FBC) remains a challenge. In this paper, we present an optimized channel-aware ordered successive relaying protocol with finite-blocklength coding (CAO-SIR-FBC), which can recover the rate loss by carefully adapting the relay transmission order and rate. We analyze the average throughput of the CAO-SIR-FBC method, based on which a closed-form expression in a high signal-to-noise regime (SNR) is presented. Average throughput analysis and simulations show that CAO-SIR-FBC outperforms conventional two-timeslot half-duplex relaying in terms of spectral efficiency.

翻译：连续连续中继可以通过允许源和继电器同时传输电文来提高传输率,但可能会造成严重的中继干扰(IRI),因此建议了IRI取消计划,以缓解IRI。然而,取消干扰的方法具有高度的错误传播风险,导致在有限区长系统中造成严重的传输率损失。因此,用有限区块长的相联(FBC)对连续中继传输进行联合解码仍然是一个挑战。在本文件中,我们提出了一个优化的频道感应顺序中继协议(CAO-SIR-FBC),它可以通过仔细调整中继传输顺序和速率来恢复速度损失。我们分析了CAO-SIR-FBC方法的平均通过量,根据这种方法提出了高信号到噪音系统的封闭式表达方式。平均通过量分析和模拟表明,CAO-SIR-FBC在光谱效率方面超过了常规的两时半移动。