spectral efficiency的用法和样例：
例句
- Simulation results show that the spectral efficiency is improved and the outage probability is decreased in the proposed joint algorithm.
仿真结果表明，本文提出的联合算法具有较高的频谱效率和较低的中断概率。 - Cooperative relaying can combat multi-path fading and shadowing effect in wireless networks to enhance communication quality and bandwidth efficiency.
采用中继传输能够抵抗无线信道的多径衰落，克服阴影效应，从而增强通信质量，提高频谱效率。
