improved channels meaning in English

改良航道
疏浚航道

Special attention was paid to improving channel robustness
人们对改进信道的健壮性特别关注。
Improved channel access during cfp , and the ability to retain polling for backward compatibility , result in more efficient polling
在cfp中改进的信道访问和维持轮询向后兼容性的能力，带来了更高效率的轮询。
An improved channel estimation scheme are offered , which resists noise efficiently and provides accurate channel estimation coefficient
原有信道估计方案对噪声敏感，当存在噪声时，信道估计性能严重恶化。
Based on the idea of contention reservation access and polling transmission , user - dependent perfect - scheduling multiple access ( upma ) protocol is presented , which supports both node mobility and multi - hop network architecture . it improves channel utilization greatly and guarantees that a node accesses the channel rapidly
基于有效竞争预约接入、无冲突轮询传输的思想提出了在无线adhoc网络中支持节点移动性和多跳网络结构的依据用户妥善安排的多址接入( upma )协议。