BBM（BaseBand Modem）是基带调制解调器的意思。

例句: Digital Auto Gain Control(DAGC) is applied based on FPGA in CDMA system,for the interface between data sampled from large scale ADC and CSM5000 which 为了在CDMA系统中实现大动态ADC采样结果与基带调制解调芯片CSM5000的接口,在FPGA中实现了数字自动增益控制(DAGC)。