一个j2me的开发实现，手机端定时的传输当前的经度，纬度。到servlet，服务器的结合googlemap显示到map上，手机端还可以发送图片到客户端，并通过ajax显示在googlemap上-The development and realization of a j2me, mobile terminal transmit timing current longitude, latitude. To the servlet, the server with googlemap display

Orthogonal Frequency Division Multiplexing (OFDM) systems are more sensitive to timing and frequency offsets than single carrier systems. This Paper presents a method of joint time and frequency synchronization for OFDM systems. The synchroni