解码转发下中继不同行为对系统性能的影响

• 作 者: 张成凯 付晓梅 王鼎宇
• 机 构: 天津大学电子信息工程学院,
• 出 处: 南开大学学报(自然科学版)
• 发表日期: 2015年04期
• 关键词: 系统性能 信噪比 中继行为 自私行为 最大比合并 恶意行为 合并方法 协作通信 通信模型 信道衰落

基于3节点协作通信模型,考虑在实际环境非完全正确解码转发情形下,中继协作转发对系统性能的影响.在此基础上,研究了中继的自私行为、恶意发送噪声行为对系统性能的影响.结果表明非正确解码转发的协作对系统性能有较大提升,甚至在中继自私的情形下也有助于系统性能.中继的恶意发送噪声行为在传统的最大比合并下会随着中继功率的增大而降低系统性能,而采用等效信噪比合并方法可以避免恶意行为对系统性能的影响.

Based on the 3-node collaborative communication model, the influence of relay cooperative forwarding on the system performance is considered under the circumstances that the actual environment is not completely decoded and forwarded.On the basis of this, the selfish behavior of relay and the performance of malicious transmit noise on system performance The results show that the cooperation of improper decoding and forwarding improves the performance of the system greatly and even contributes to the system performance even in the case of selfishness.Therefore the malicious transmitting noise of relay under the traditional maximum ratio combining Following the increase of power, the performance of the system is reduced, and the equivalent SNR combination method can avoid the influence of malicious behavior on the system performance.