| 1. | Secondly , the thesis designs a kind of scheme of simulcast base station and center base station . and the requisite requirement and chip are introduced here , and the most important controller is atmega128 , the avr microcontrollers of atmel corporation . the other roles are played by voice processing circuit , simulcast broadcasting station , data transmission broadcasting station , link transmitter - receiver and gps module etc . and some theory is introduced here , which includes a / d conversion and correct code 然后,给出了一种同播基站和中心基站子系统的设计方案并简要说明了所使用的各种设备和芯片,其中最主要的基站控制器由atmel公司的avr单片机atmega128来完成,其它的还包括语音处理电路、同播电台、数传电台、链路机、 gps模块等,并介绍了相关的理论知识,包括a / d转换,纠错编码等。 |