原帖由 <i>一米阳光</i> 于 2009-8-28 00:49 发表 <a href="http://www.mscbsc.com/bbs/redirect.php?goto=findpost&pid=1588083&ptid=143539" target="_blank"><img src="http://www.mscbsc.com/bbs/images/common/back.gif" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='Click here to open new window\nCTRL+Mouse wheel to zoom in/out';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor='hand'; this.alt='Click here to open new window\nCTRL+Mouse wheel to zoom in/out';}" onclick="if(!this.resized) {return true;} else {window.open(this.src);}" onmousewheel="return imgzoom(this);" alt="" /></a><br />
1、信干比，就是有用信号和无用信号的比值，这个比值要大点好，一般要在-12dBm以上。<br />
2、调制方式，QPSK是4个相位的调制、8PSK是8个相位、16QAM是16个相位，调制方式越高，空口速率越快。<br />
3、编码就是为增加符 ...