在直角的频率部门 multiplexing (OFDM ) 系统,光谱槽口能被产生由关掉相应副载波减轻干扰到另外的狭窄乐队的服务。然而,内部搬运人的干扰可以更加限制生产槽口深度。在 OFDM 的另一个问题是高 peak-to-average 力量比率(PAPR ) 。在这份报纸,把副载波 precoding 与音调保留相结合的一种技术被建议加深光谱槽口并且同时减少 peak-to-average 力量比率。这个介绍联合算法能生产的模拟结果表演满足了结果处于位错误率(BER ) 在损坏中等损失的情况下解决这些问题性能。
In orthogonal frequency division multiplexing (OFDM) systems, spectrum notch can be generated to mitigate interference to other narrow-band services by turning off corresponding subcarriers. However, the inter-carrier interference may limit considerably the produced notch depth. Another problem in OFDM is the high peak-to-average power ratio (PAPR). In this paper, a technique combining subcarriers precoding with tone reservation is proposed to deepen spectrum notch and simultaneously reduce peak-to-average power ratio. Simulation results show that this presented joint algorithm can produce satisfied results to solve these problems at the expense of a moderate loss in bit error rate (BER) performance.