GSM0505标准请教

sunstar16

一、在05.05标准里有关调制谱的描述：
i)in the combined range 600 kHz to 6 MHz above and below the carrier, in up to three bands of 200 kHz width centred on a frequency which is an integer multiple of 200 kHz, exceptions at up to -36 dBm are allowed;
ii) above 6 MHz offset from the carrier in up to 12 bands of 200 kHz width centred on a frequency which is an integer multiple of 200 kHz, exceptions at up to -36 dBm are allowed. For the BTS only one transmitter is active for this test;
iii) for MS measured below 600 kHz from the carrier, if the limit according to the above table is below -36 dBm, a value of -36 dBm shall be used instead. For 600 kHz up to less than 1 800 kHz this limit shall be -56 dBm for DCS 1 800 MS and -51 dBm for GSM 900 MS. At 1 800 kHz and beyond, this limit shall be -51 dBm for DCS 1 800 MS and -46 dBm for GSM 900 MS
麻烦谁能详细解释上面的意思？
二、在瞬态开关谱里有这样一句话：
The example of a waveform due to a burst as seen in a 30 kHz filter offset from the carrier is given hereunder (figure 1). 这里面offset from the carrier怎么理解？30KHz filter不是分辨率带宽吗？
谢谢。有对应的中文标准提供吗？

sunstar16

有人解答吗？

cxin2

http://www.52rd.com/bbs/dispbbs.asp?boardID=34&ID=2078&page=2
看看这个

tksger1987

offset from the carrier 是指离开载频的偏移量。
整段话我也没读太懂，苦于公司里无人指导啊