Title :
An investigation of interference between UTRA-TDD and FDD system
Author :
Qingyu, Miao ; Wenbo, Wang ; Dacheng, Yang ; Daqing, Wang
Author_Institution :
Radio Res. Center, Beijing Univ. of Posts & Telecommun., China
Abstract :
Interference between the UTRA-TDD and FDD system is investigated. There are some specific interference modes in the TDD mode because the uplink and the downlink use the same frequency band in the TDD mode. The UTRA-TDD and the UTRA-FDD have severe adjacent channel interference if they use the adjacent carrier. Some simulations are done to study the interference. Impacts of four different interference instances were considered in the simulation. The impact on the UTRA-FDD uplink capacity is evaluated. Some interesting results are given from the simulations. The TDD and FDD base station can not be co-located if they use the adjacent frequency band between which the value of ACIR is below about 70 dB. The TDD and FDD cells can use the same frequency in some scenarios, which will increase the capacity, and utilize the underused UTRA-FDD uplink resources
Keywords :
adjacent channel interference; cellular radio; channel capacity; code division multiple access; frequency division multiple access; time division multiple access; UTRA-FDD; UTRA-TDD; adjacent carrier; adjacent channel interference; adjacent frequency band; cells; downlink; uplink capacity; 3G mobile communication; Downlink; Frequency synchronization; Interchannel interference; Land mobile radio; Mobile communication; Multiaccess communication; Research and development; Time division synchronous code division multiple access; Video on demand;
Conference_Titel :
Communication Technology Proceedings, 2000. WCC - ICCT 2000. International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-6394-9
DOI :
10.1109/ICCT.2000.889226
