ETSI EN 301 277-2000 固定无线电系统.点对点设备.使用同信道双极操作的在40MHz射频信道中传输STM-4或4×STM-1的大容量数字无线电系统(版本1.1.1)
Fixed Radio Systems; Point-to-Point Equipment; High Capacity Digital Radio Systems Transmitting STM-4 or 4 x STM-1 in a 40 MHz Radio Frequency Channel Using Co-Channel Dual Polarized (CCDP) Operation V1.1.1