Browse > Article

A Pilot Symbol Insertion Method for SC-FDMA Mobile Communication Systems  

Rim, Min-Joong (Department of Information and Communication Engineering, Dongguk University)
Ryu, Chul (Department of Information and Communication Engineering, Dongguk University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.44, no.6, 2007 , pp. 48-56 More about this Journal
Abstract
OFDMA (Orthogonal Frequency Division Multiple Access) is widely used as multiple access techniques for next generation mobile communication systems. However, OFDMA has a disadvantage of high peak-to-average power ratio and SC-FDMA (Single-Carrier Frequency Division Multiple Access) was proposed for uplink systems to overcome the drawback. SC-FDMA also has several demerits including degraded performance with high-order modulations or with multiple antenna techniques, and less flexibility in resource allocation and pilot patterns. In order to achieve the best performance over a wide range of environments, each mobile station should select either of OFDMA and SC-FDMA according to the given condition and a pilot structure for SC-FDMA systems should be similar to that of OFDMA to maintain the same frame structure. While conventional SC-FDMA schemes require an entire SC-FDMA symbol or a separate short symbol for pilots, this paper proposes a method which supports the pilots included in SC-FDMA data parts and enables a SC-FDMA frame to hold the same structure as an OFDMA frame.
Keywords
SC-FDMA; OFDMA; Pilot; Channel Estimation; Cyclic Prefix;
Citations & Related Records
연도 인용수 순위
  • Reference
1 H. Witschnig, T. Mayer, A. Springer, A. Koppler, 'A Different Look on Cyclic Prefix for SC/FDE,' PIMRC, pp.824-828, September 2002
2 N. Al-Dhahir, 'Single-Carrier Frequency-Domain Equalization for Space-Time Block-Coded Transmissions over Frequency-Selective Fading Channels,' IEEE Communications Letters, Vol.5, No.7, pp.304-306, July 2001   DOI   ScienceOn
3 D. Falconer, S.L. Ariyavisitakul, A. Benyamin- Seeyar, B. Eidson, 'Frequency Domain Equalization for Single-Carrier Broadband Wireless Systems,' IEEE Communications Magazine, Vol.40, No.4, pp.58-66, April 2002
4 A. Gusmao, R. Dinis, J. Conceicao, N. Esteves, 'Comparisons of Two Modulation Choices for Broadband Wireless Communications,' VTC, pp.1300-1305, May 2000
5 H. Liu, G. Li, OFDM-Based Broadband Wireless Networks, John Wiley & Sons Inc. 2005
6 IEEE802.20: QFDD and QTDD: Proposed Draft Air Interface Specification, Qualcomm, October 2005
7 R1-050807, ETRI, Pilot Structure for SC-FDMA, London, England, August 2005
8 R1-051421, Nortel, UL Link Level Performance of SC-FDMA and OFDMA with Real Channel Estimation and Virtual MIMO, Seoul, Korea, November 2005
9 IEEE P802.16e/D12: Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems: Amendment for Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands, October 2005
10 IEEE Standard 802.16a: Air Interface for Fixed Broadband Wireless Access Systems– Amendment 2: Medium Access Control Modifications and Additional Physical Layer Specifications for 2-11GHz, IEEE
11 R1-051099, Qualcomm, Considerations on OFDMA and SC-FDMA based Uplink for E-UTRA Evaluation–Link Aspects, San Diego, CA, October 2005
12 3GPP TR 25.814: Technical Specification Group Radio Access Network; Physical Layer Aspects for Evolved UTRA, February 2006
13 H. Witschnig, G. Ossberger, A. Springer, A. Koppler, L. Maurer, M. Huemer, R. Weigel, 'The Effect of Blockwise Transmission on Higher-Order Modulation Schemes for SC/FDE,' International Symposium on Wireless Personal Multimedia Communications, pp.27-30, October 2002
14 S. Haykin, 'Communication Systems,' John Wiley & Sons, 2001
15 Z. Wang, G. B. Giannakis, 'Wireless Multicarrier Communications,' IEEE Signal Processing Magazine, Vol.17, No.3, pp.29-48, May 2000   DOI   ScienceOn
16 R1-050834, LG Electronics, Basic Performance Results for Uplink OFDMA and SC-FDMA, London, England, September 2005