摘要
随着无线通信技术的发展,广播电视信号传输质量显著提升,但多路径衰落仍是重大挑战。多路径衰落导致信号强度波动、相位变化和频率选择性衰落,尤其在城市环境中更为明显。针对这一挑战,通过分集技术强化信号,有效减少信号波动和衰落。实验表明,采用分集技术后的信号信噪比比未使用分集技术的多路径衰落信号提升明显,显著提高了信号稳定性和可靠性,为复杂环境下的广播电视信号传输提供了有效解决方案。
With the development of wireless communication technology,the quality of broadcasting and television signals transmission has significantly improved,yet multipath fading remains a major challenge.Multipath fading causes signal strength fluctuations,phase changes,and frequency-selective fading,particularly evident in urban environments.To address this challenge,this study employs diversity techniques to enhance the signal,effectively reducing signal fluctuations and fading.Experiments show that the signal-tonoise ratio of signals using diversity techniques is nearly five times higher than that of signals experiencing multipath fading without such techniques.This significantly improves signal stability and reliability,providing an effective solution for broadcast television signal transmission in complex environments.
作者
张健
ZHANG Jian(Yunnan Radio and Television Station,Kunming 650500,China)
出处
《电视技术》
2024年第11期142-145,共4页
Video Engineering
关键词
多路径衰落
信号强化技术
广播电视信号
multipath fading
signal enhancement technique
broadcasting and television signal
