Spectrally efficient modulation and spreading scheme for CDMA systems

被引：2
|
作者：
Shim, JR [1 ]
Bang, SC [1 ]
机构：
[1] ETRI Radio & Broadcasting Technol Lab, Radio Transmiss Technol Team, Yusong Gu, Taejon 305350, South Korea
来源：
ELECTRONICS LETTERS | 1998年 / 34卷 / 23期
关键词：
D O I：
10.1049/el:19981570
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel modulation and spreading scheme is proposed based on the orthogonal complex rotator that outperforms the traditional PN (pseudo noise) complex QPSK method in terms of adjacent channel power. This scheme is important for hand-held terminals because it increases battery life and capacity due to reduced interference. A mathematical analysis and adjacent channel power simulation results are provided and discussed.
引用
收藏
页码：2210 / 2211
页数：2
相关论文
共 50 条
  • [31] An efficient adaptive modulation scheme for wireless OFDM systems
    Lee, Chang Wook
    Jeon, Gi Joon
    ETRI JOURNAL, 2007, 29 (04) : 445 - 451
  • [32] An efficient application scheme of adaptive antenna for multimedia CDMA communication systems
    Hwang, S
    Hong, D
    Cho, D
    IEEE REGION 10 INTERNATIONAL CONFERENCE ON ELECTRICAL AND ELECTRONIC TECHNOLOGY, VOLS 1 AND 2, 2001, : 500 - 504
  • [33] An efficient channel code assignment scheme for multiple users in CDMA systems
    Kung, WY
    Kim, CS
    Hwang, CH
    Kuo, CCJ
    MULTIMEDIA SYSTEMS AND APPLICATIONS III, 2001, 4209 : 140 - 150
  • [34] Efficient PAPR reduction scheme for satellite MC-CDMA systems
    Kang, K
    Kim, S
    Ahn, D
    Lee, HJ
    IEE PROCEEDINGS-COMMUNICATIONS, 2005, 152 (05): : 697 - 703
  • [35] An Efficient Multiuser Scheduling Scheme For MIMO-CDMA Wireless Systems
    Driouch, Elmahdi
    Ajib, Wessam
    WTS: 2009 WIRELESS TELECOMMUNICATIONS SYMPOSIUM, 2009, : 238 - 244
  • [36] Orthogonal code design for spectrally encoded CDMA systems
    Forouzan, Amir R.
    Garth, Lee M.
    GLOBECOM 2007: 2007 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-11, 2007, : 4434 - 4439
  • [37] Cyclic spreading and over-symbol RAKE reception scheme in wideband DS/CDMA systems
    Inoue, T
    Miura, R
    Karasawa, Y
    ICUPC '96 - 1996 5TH IEEE INTERNATIONAL CONFERENCE ON UNIVERSAL PERSONAL COMMUNICATIONS RECORD, VOLS 1 AND 2, 1996, : 159 - 163
  • [38] Compensation of Nonlinear Fibre Impairments in Coherent Systems Employing Spectrally Efficient Modulation Formats
    Rafique, Danish
    Zhao, Jian
    Ellis, Andrew D.
    IEICE TRANSACTIONS ON COMMUNICATIONS, 2011, E94B (07) : 1815 - 1822
  • [39] A Novel Optical CDMA Modulation Scheme: Code Cycle Modulation
    Kumar, P. Vijay
    Omrani, Reza
    Touch, Joe
    Willner, Alan E.
    Saghari, Poorya
    GLOBECOM 2006 - 2006 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, 2006,
  • [40] Combined coding and spreading in downlink CDMA systems
    Lassing, J
    Persson, A
    Ottosson, T
    Ström, E
    Svensson, A
    2000 IEEE 51ST VEHICULAR TECHNOLOGY CONFERENCE, PROCEEDINGS, VOLS 1-3, 2000, : 2403 - 2407
12345