发明名称 |
RANDOM ACCESS COMMUNICATION METHOD BY USE OF CDMA, AND SYSTEM FOR MOBILE STATIONS WHICH USE THE METHOD |
摘要 |
Each of the mobile stations 121 to 123 sets delay amounts d1, d2 and d3 at random for every message to be transmitted on the basis of the symbol timing received from the base station in order to give delay to the transmission signal. The base station (11) inversely diffuses the reception signal to extract the standard symbol timing for each of the mobile stations, and allows each demodulator to receive the inverted diffusion output at the extracted timing and to demodulate the reception signal. |
申请公布号 |
WO9421056(A1) |
申请公布日期 |
1994.09.15 |
申请号 |
WO1994JP00338 |
申请日期 |
1994.03.03 |
申请人 |
NTT MOBILE COMMUNICATIONS NETWORK INC.;UMEDA, NARUMI;DOUZONO, YOUICHI;MATSUMOTO, TADASHI |
发明人 |
UMEDA, NARUMI;DOUZONO, YOUICHI;MATSUMOTO, TADASHI |
分类号 |
H04B1/707;H04B7/26;H04J13/00;H04L12/56;(IPC1-7):H04B7/26 |
主分类号 |
H04B1/707 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|