/Hz) BS only 47.257 16.223 0.901 BS + H1 79.891 18.217 1.012 BS + H1 + H2 98.519 21.583 1.199 Table 8.4 Scalar Results for the Relay Scenario within the Polygon Area Scenario Coverage (%) Capacity (Mb/s) Spectral Efficiency (b/s/Hz) BS only 64.816 18.519 1.029 BS + H1 87.536 22.091 1.227 BS + H1 + H2 98.925 24.375 1.354 Figure 8.31 Fraction of the area served by the BS, the two-hop, or the three- hop links. This is shown as a function of the circular radius of the accounted area around the base station. Even close to the base station, relays help to improve in 8% of the area. Within an 800-m circle, relays cover 60% of the area. © 2009 by Taylor & Francis Group, LLC Long Term Evolution: 3GPP LTE Radio and Cellular Technology References 1. LTE introduction at http://www.3gpp.org/Highlights/LTE/LTE.htm 2. IST-4-027756. Wireless world initiative new radio II annex. 3. The WINNER forum at http://www.ist-winner.org/ 4. The WiMAX forum at http://www.wimaxforum.org/ 5. ETSI. GSM recommendations 04.05, 1993. Data link layer-General aspects. 6. 3GPP. 2001. TS 25 211. Physical channels and mapping of transport channels onto physical channels (FDD). 7. 3GPP. 2001. TS 25 211. Physical channels and mapping of transport channels onto physical channels (TDD). 8. 3GPP. 2007. TS 36.300. Technical specification group radio access network E-UTRAN V8.0.0. 9. IEEE. 2004. IEEE Std. 802.16-2004. IEEE standard for local and metropolitan area networks, part 16: Air interface for fixed broadband wireless access systems. 10. Chan, P. W. C. et al. 2006. The evolution path of 4G networks: FDD or TDD? IEEE Communications Magazine 44 (12): 42-50. 11. Berlemann, L., R. Pabst, M. Schinnenburg, and B. Walke. 2005. A flexible protocol stack for multi-mode convergence in a relay-based wireless network architecture. Proceedings of IEEE Personal Indoor and Mobile Radio Conference 2005 (PIMRC05), September 2005. 12. Pabst, R. et al. 2004. Relay-based deployment concepts for wireless and mobile broadband radio. IEEE Communications Magazine 42 (9): 80-8