The Reform Schema and Usability of TD-SCDMA Smart Antenna
Haiyang Fu, Qu Xiaochun, Han Youcai · 2008
It's proved in the paper that the smart antenna (SA) is unusable in the downlink of CDMA system, and so the TD-SCDMA standard should be improved. A reform schema will be given in this paper, which uses CDMA/TDMA respectively in the uplink/downlink channel. In this schema, the SA can still be used in downlink channel. It will give a new life to TD-SCDMA standard. 8PSK or 16QAM can be used in the downlink channel, which has higher spectrum efficiency. They will transfer the surplus downlink power to the spectrum efficiency. The improved TD-SCDMA standard will meet the needs of the mobile Internet.