Journal of Communications and Networks

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지

Interference Mitigation Technique for the Sharing between IMT-Advanced and Fixed Satellite Service

  • Lim, Jae-Woo (Radio Research Laboratory, Ministry of Information and Communication) ;
  • Jo, Han-Shin (Department of Electrical and Electronic Engineering, Yonsei University) ;
  • Yoon, Hyun-Goo (Department of Computer and Electronic Engineering, Myongji College) ;
  • Yook, Jong-Gwan (Department of Electrical and Electronic Engineering, Yonsei University)
  • Published : 2007.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we propose an efficient and robust interference mitigation technique based on a nullsteering multi-user multiple-input multiple-output (MU-MIMO) spatial division multiple access (SDMA) scheme for frequency sharing between IMT-advanced and fixed satellite service (FSS) in the 3400-4200 and 4500-4800 MHz bands. In the proposed scheme, the pre-existing precoding matrix for SDMA unitary precoded (UPC) MIMO proposed by the authors is modified to construct nulls in the spatial spectrum corresponding to the direction angles of the victim FSS earth station (ES). Furthermore, a numerical formula to calculate the power of the interference signal received at the FSS ES when IMT-Advanced base stations (BS) are operated with the interference mitigation technique is presented. This formula can be derived in closed form and is simply implemented with the help of simulation, resulting in significantly reduced time to obtain the solution. Finally, the frequency sharing results are analyzed in the co-channel and adjacent channel with respect to minimum separation distance and direction of FSS earth station (DOE). Simulation results indicate that the proposed mitigation scheme is highly efficient in terms of reducing the separation distance as well as robust against DOE estimation errors.

Keywords

References

  1. ITU-R WP 8F/963-E, 'Sharing study between IMT-Adavanced and fixed satellite service the the bands of 3400-4200 MHz and 4400-4990 MHz,' Aug. 2006
  2. ITU-R WP 8F/975-E, 'Analysis of interference from IMT to FSS in the 3400-4200 MHz and 4500-4800 MHz,' Aug. 2006
  3. ITU-R WP 8F/1015-E, 'Sharing studies between FSS and IMT-Adavanced systems in the 3400-4200 MHz and 4500-4800 MHz Bands,' Aug. 2006
  4. ITU-R WP 8F/1027-E, 'Impact of FSS networks on the IMT-Adavanced systems in the bands 3400-4200 MHz and 4500-4800 MHz,' Aug. 2006
  5. Nee, R., Prasad, R., OFDM for Wireless Multimedia Communications, Artech House, Boston, 2000
  6. H. Weingarten, Y. Steinberg, and S. Shamai (Shitz), 'The capacity region of the Gaussian MIMO broadcast channel,' in Proc. IEEE ISIT, June 2004
  7. M. Costa, 'Writing on dirty paper;' IEEE Trans. Inf. Theory, vol. 29, no. 3, pp. 439-441, May 1983 https://doi.org/10.1109/TIT.1983.1056659
  8. Cheol Mun, et ai., 'Space division multiplexing/space division multiple access unitary precoded MIMO,' in Proc. Wireless World Research Forum (WWRF), 15 Dec. 2005
  9. ITU - R Rec. SF.1006, 'Determination of the interference potential between earth stations of the fixed-satellite service and stations in the fixed service,' Apr. 2003
  10. ITU-R Rec. F.758-4, 'Considerations in the development of criteria for sharing between the terrestrial fixed service and other services,' Jan. 2005
  11. 3GPP2/TSG-C.R1002, 'lxEV-DV Evaluation Methodology (V12.1),' NOKIA, 2003
  12. Han-Shin Jo, et ai., 'The Coexistence of OFDM-based systems beyond 3G with Fixed Service Microwave Systems,' J. Commun. Networks, vol. 8, no. 2, June 2006 https://doi.org/10.1109/JCN.2006.6182747
  13. ITU-R Rec. S.1432, 'Apportionment of the allowable error performance degradations to Fixed-Satellite Service (FSS) hypothetical reference digital paths arising from time invariant interference for systems operating below 15 GHz,' Jan. 2000
  14. ITU-R Rec. S.614-4, 'Allowable error performance for a satellite hypothetical reference digital path in the fixed-satellite service operating below 15 GHz when forming part of an international connection in an integrated services digital network,' Feb. 2005
  15. ITU-R Rec. S.1062-3, 'Allowable error performance for a satellite hypothetical reference digital path operating below 15 GHz,' Feb. 2005
  16. ITU-R Rec. S.1420, 'Performance for broadband integrated services digital network asynchronous transfer mode via satellite,' Nov. 1999
  17. ITU-R Rec. P.452-12, 'Prediction procedure for the evaluation of microwave interference between stations on the surface of the earth at frequencies above about 0.7 GHz,' Mar. 2005
  18. ITU-R Rec. S.1328-4, 'Satellite system characteristics to be considered in frequency sharing analyses within the fixed-satellite service,' Sept. 2002
  19. ITU-R Rec. SM.1448, 'Determination of the coordination area around an earth station in the frequency bands between 100 MHz and 105 GHz,' May 2000