【資料成文時間】：06年05月17
【語言】：英文
【頁數(shù)】：11
【何人（公司）所著】：GLOBAL SYSTEM FOR
MOBILE COMMUNICATIONS
【文件格式】：PDF
【文件原名】：GSM_modulation
【摘要或目錄】：Contents
Intellectual Property Rights ..........................................................................................................................4
Foreword.....................................................................................................................................................4
1 Scope.................................................................................................................................................5
1.1 References ................................................................................................................................................. 5
1.2 Abbreviations............................................................................................................................................. 5
2 Modulation format for GMSK.............................................................................................................5
2.1 Modulating symbol rate.............................................................................................................................. 5
2.2 Start and stop of the burst ............................................................................................................................ 5
2.3 Differential encoding.................................................................................................................................. 6
2.4 Filtering ..................................................................................................................................................... 6
2.5 Output phase .............................................................................................................................................. 7
2.6 Modulation................................................................................................................................................. 7
3 Modulation format for 8PSK...............................................................................................................7
3.1 Modulating symbol rate.............................................................................................................................. 7
3.2 Symbol mapping ........................................................................................................................................ 7
3.3 Start and stop of the burst ............................................................................................................................ 8
3.4 Symbol rotation.......................................................................................................................................... 9
3.5 Pulse shaping ............................................................................................................................................. 9
3.6 Modulation................................................................................................................................................. 9
Annex A (informative): Change control history ..............................................................................10
History ......................................................................................................................................................11

[ 本帖最后由 shayanchao 于 2008-7-26 12:31 編輯 ]