DocumentCode :
3003605
Title :
CIR improvement in a cellular mobile system using beamforming and power control
Author :
Qureshi, Muhammad Ali ; Aziz, Abdul ; Bakhsh, Hussain
Author_Institution :
Dept. of Telecommun. Eng. / Electron. Eng., Islamia Univ. of Bahawalpur, Bahawalpur, Pakistan
fYear :
2010
fDate :
11-12 June 2010
Firstpage :
294
Lastpage :
297
Abstract :
Cochannel interference is the most important issue in cellular mobile systems. It can be reduced by increasing the frequency re-use distance among the cochannel cells while keeping constant cell radius which improves the quality of a cellular mobile system. But this will decrease the overall network capacity because cluster size, which is inversely proportional to network capacity, also increases. Beamforming using antenna arrays is an effective technique to reduce cochannel interference while cluster size remains the same. Here first we use beamforming technique at the base station to reduce uplink cochannel interference and hence improvement in uplink carrier to interference ratio (CIR). Then we use power control together with the beamforming technique for further improvement in CIR and hence increase in network capacity. Both beamforming and power control parameters are updated iteratively in our proposed algorithm so that they jointly increase the network capacity. There are many other advantages of beamforming and power control such as saving in power of mobile station but here we focus only on CIR Improvement because it is the most common parameter in all access schemes like FDMA, TDMA, CDMA and SDMA.
Keywords :
antenna arrays; cellular radio; cochannel interference; code division multiple access; frequency division multiple access; mobile radio; power control; radio links; space division multiple access; telecommunication control; time division multiple access; CDMA; FDMA; SDMA; TDMA; access schemes; antenna arrays; beamforming technique; cellular mobile system; cochannel cells; frequency re-use distance; network capacity; power control; uplink carrier to interference ratio; uplink cochannel interference; Antenna arrays; Array signal processing; Base stations; Interchannel interference; Multiaccess communication; Power control; Power engineering and energy; Power system modeling; Signal to noise ratio; Transmitters; Antenna Array; BS; Beamforming; CIR; Cellular System; Cochannel Interference; MS; Power Control; SNR;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Networking and Information Technology (ICNIT), 2010 International Conference on
Conference_Location :
Manila
Print_ISBN :
978-1-4244-7579-7
Electronic_ISBN :
978-1-4244-7578-0
Type :
conf
DOI :
10.1109/ICNIT.2010.5508510
Filename :
5508510
Link To Document :
بازگشت