In this paper, the co-existence of TDMA and W-CDMA spectrum sharing system (TDMA/W-CDMA overlaid system) with cellular architecture is discussed. In this system, both systems share the same frequency band to improve the spectrum efficiency. Overall rate, bit error ratio (BER) and spectrum efficiency of the system are calculated for the forward link (downlink) in the presence of AWGN channel. Taking into account the path loss and shadow fading loss in this system with cellular architecture, W-CDMA applying interference cancellation (IC) shows a substantial difference in spectrum efficiency, the overlaid system can provide a greater overall rate and higher spectrum efficiency than a single multiple access-based system such as TDMA system or W-CDMA system. The interference cancellation can significantly improve BER of the spectrum overlaid system.
雑誌名
IEICE transactions on fundamentals of electronics, communications and computer sciences
巻
E85-A
号
7
ページ
1536 - 1545
発行年
2002-07
出版者
The Institute of Electronics, Information and Communication Engineers
Forward Link Performance of TDMA/W-CDMA Spectrum Overlaid System with Interference Cancellation for Future Wireless Communications
1_0018.pdf
(650.54KB)
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