作者: Albert John Mallinckrodt
DOI:
关键词:
摘要: A code division multiple access (CDMA) spread spectrum cellular communications system with both surface and satellite nodes using forward error correction coding, to enhance effective gain selectivity, is provided. The network control center (12) directs the top level allocation of calls regional resources in system. node centers (14) are connected direct ground nodes. (16) under one receive over land lines, them, modulate transmit them. Satellite (18) also (12), uplink spread, multiplexed designated (20). User units (22) respond signals either or origin. digital data interleaving feature reduces fading. position determined. An adaptative transmitter power (188) compensates for signal strength variations. intercell bus (90) a satellitte (20) connects together cells.