Browse > Article

Adjacent Interference Analysis between M-WiMAX OFDMA/TDD and WCDMA FDD System in the 2.6 GHz Band Part II : Adjacent Interference Analysis with Smart Antenna in M-WiMAX System  

Wang, Yu-Peng (인하대학교 정보통신대학원 이동통신연구실)
Ko, Sang-Jun (인하대학교 정보통신대학원 이동통신연구실)
Chang, Kyung-Hi (인하대학교 정보통신대학원 이동통신연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.6A, 2007 , pp. 588-599 More about this Journal
Abstract
This paper presents the coexistence issues between M-WiMAX TDD and WCDMA FDD systems. To improve the M-WiMAX system performance and to reduce the adjacent channel interference to WCDMA FDD system, transmit and receive beamforming techniques are applied in the base stations of M-WiMAX system. Furthermore, we propose an adjacent channel interference modeling methodology, which captures the effect of transmit beamforming on the adjacent channel interference. Besides, we verify the performance improvement in the uplink of WCDMA system due to the transmit beamforming in M-WiMAX downlink based on the proposed adjacent channel interference modeling methodology. We also verify the performance enhancement due to the receive beamforming in the uplink of M-WiMAX system through system level Monte Carlo simulations, considering random user position, the effect of shadowing and multi-path fading channel. Discussions on the gain of applying transmit and receive beamforming in M-WiMAX system comparing the case of SISO system are also included. Furthermore, we present the performance of cosited M-WiMAX and WCDMA systems, considering commercial deployment, additional channel filter at base stations and the effects of TxBF and RxBF.
Keywords
ACI; M-WiMAX; WCDMA; Smart Antenna; Transmit Beamforming; Receive Beamforming;
Citations & Related Records
연도 인용수 순위
  • Reference
1 고상준, 왕우붕, 장경희, '2.6 GHz 대역에서 M-WiMAX OFDMA/TDD 시스템과 WCDMA FDD 시스템간의 상호 간섭 분석 - Part I : SISO 시스템에서의 상호 간섭 분석,' 한국통신학회 논문지, 2007. 06
2 Lee, J. and Arnott, R., 'System performance of multi-sector smart antenna base stations for WCDMA,' in proc. 3G Mobile Comm. Tech., Mar. 2001, pp. 1-6
3 3GPP, 'Base Station (BS) Radio Transmission and Reception (FDD),' 3GPP TS 25.104 Version 7.4.0, June 2006
4 3GPP, 'User Equipment (UE) Radio Transmission and Reception (FDD),' 3GPP TS 25.101 Version 7.4.0, June 2006
5 ITU WiMAX Forum WP8F-1-E, Aug. 2006
6 Cdma2000 Evaluation Methodology, Revision 0, Dec. 2004
7 ITU Spectrum SWG Sharing Studies WP8F 443-E, Aug. 2006
8 Haring, L., Chalise, B.K., and Czylwik, A., 'Dynamic system level simulations of downlink beamforming for UMTS FDD,' in Proc. IEEE GLOBECOM, Dec. 2003, pp. 492-496
9 ITU WiMAX Forum WP8F-2-E, Aug. 2006
10 J. Heo and K.H. Chang, 'Transmit and Receive Beamforming for OFDMA/TDD System,' in proc. Intl. Symp. on Antenna and Propagation, Aug 2005, pp. 27-30
11 J. Litva and T. Lo, Digital Beamforming in Wireless Communications, Artech House, 1996
12 B. L. P. Cheung, Simulation of Adaptive Array Algorithms for OFDM and Adaptive Vector OFDM Systems, Master of Science in Electrical Engineering of Virginia Polytech., Sept. 2002