DIN EN 301127-2003 固定无线电系统.点对点设备.使用同极化配置或同波道双极化(CCDP)操作的有大约30MHz信道空间的频带中承载SDH信号(不高于2 Pt STM-1)的高容量数字无线电系统
Fixed Radio Systems - Point-to-point equipment - High capacity digital radio systems carrying SDH signals (up to 2 × STM-1) in frequency bands with about 30 MHz channel spacing and using co-polar arrangements or Co-Channel Dual Polarized (CCDP) operation