Title :
The Reform Schema and Usability of TD-SCDMA Smart Antenna
Author :
Haiyang, Fu ; Xiaochun, Qu ; Youcai, Han
Author_Institution :
Nanjing Univ. of Posts & Telecommun., Nanjing
Abstract :
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.
Keywords :
adaptive antenna arrays; channel coding; code division multiple access; phase shift keying; quadrature amplitude modulation; spectral analysis; time division multiple access; PSK; QAM; TD-SCDMA smart antenna; TDMA standard; downlink channel; mobile Internet; reform schema; spectrum efficiency; time division-synchronous code division multiple access; uplink channel; Communication standards; Downlink; Intelligent systems; Multiaccess communication; Multiple access interference; Proposals; Telecommunication standards; Time division multiple access; Time division synchronous code division multiple access; Usability;
Conference_Titel :
Intelligent Systems Design and Applications, 2008. ISDA '08. Eighth International Conference on
Conference_Location :
Kaohsiung
Print_ISBN :
978-0-7695-3382-7
DOI :
10.1109/ISDA.2008.123
