Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
권호 표지

Throughput Capacity of a Wireless Multi-hop Relay Network using Cognitive Radio

Cognitive Radio 무선 다중홉 릴레이 네트워크의 Throughput 용량

  • Hassan, Md. Imrul (Department of Electronic and Radio Engineering, Kyung Hee University) ;
  • Song, Ju-Bin (Department of Electronic and Radio Engineering, Kyung Hee University) ;
  • Kim, Young-Il (Mobile Telecommunication Research Division, ETRI)
  • ;
  • 송주빈 (경희대학교, 전자전파공학과) ;
  • 김영일 (한국전자통신연구원, 이동통신연구단)
  • Published : 2007.05.25
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we investigate the throughput capacity of a multi-hop relay with cognitive radio (CR) enabled relay stations (RS). We suggest a TDMA/FDMA based frame structure where RSs dynamically select unused channels to communicate with the base station (BS) using CR techniques to analyze the throughput capacity. We develop the throughput capacity model for the proposed system based on utilization factor. The analytical results based on those equations show significant improvement in throughput capacity for CR enabled multi-hop relay system.

본 논문은 cognitive radio (CR) 기능을 갖는 무선 멀티홉 릴레이 네트워크의 throughput 용량에 대한 연구 결과이다. 본 논문에서는 TDMA/FDMA에 기반한 프레임 구조를 갖는 릴레이가 기지국과 통신할 때 CR 기술을 이용하여 현재 사용되고 있지 않는 주파수 자원을 측정하여 동적으로 이용하는 시스템을 제안하고 이의 throughput 용량 모델을 제안 하였다. 특히, 본 논문에서는 Utilization factor를 이용하여 제안된 시스템을 위한 throughput 용량 모델을 제안하였다. 해석 모델링 결과 본 논문에서 제안한 CR 기반 멀티홉 릴레이 시스템은 throughput 용량을 매우 향상하는 결과를 보였다.

Keywords

References

  1. V. Sreng, H. Yanikomeroglu, and D. Falconer, 'Coverage Enhancement through Two-Hop Relaying in Cellular Radio Systems,' WCNC'02, vol. 2, pp. 881-885, Mar. 2002 https://doi.org/10.1109/WCNC.2002.993387
  2. R. Pabst, B. Walke, D. Schultz et al, 'Relay-Based Deployment Concepts for Wireless and Mobile Broadband Radio', IEEE Communications Magazine, pp. 80-89, Sept. 2004 https://doi.org/10.1109/MCOM.2004.1336724
  3. S. Sengupta,. Chatterjee, Izmailov, 'WRN: Improving System Performance in 3G Networks Through Fixed Multi-hop Relay Nodes,' Wireless Communications and Networking Conference '05, vol. 3, pp. 1708-1713, Mar. 2005 https://doi.org/10.1109/WCNC.2005.1424770
  4. S. Mangold, hong, and C.-T. Chou, 'Spectrum Agile Radio: Radio Resource Measurements for Opportunistic Spectrum Usage', GLOBECOM '04, vol. 6, pp. 3467-3471, 29 Nov.-3 Dec. 2004 https://doi.org/10.1109/GLOCOM.2004.1379011
  5. S.N. Shankar,.-T. Chou,K. Challapali, and S. angold, 'Spectrum Agile Radio: Capacity and QoS Implications of Dynamic Spectrum Assignment,' GLOBECOM '05, vol. 5, 28 Nov.-2 Dec. 2005 https://doi.org/10.1109/GLOCOM.2005.1578214
  6. X. Liu, W. Wang, 'On the characteristics of spectrum-agile communication networks,' IEEE Symposium on New Frontiers in Dynamic-Spectrum Access Networks (DySPAN), 8-11 Nov. 2005 https://doi.org/10.1109/DYSPAN.2005.1542637