New quasi-synchronous sequences for CDMA slotted ALOHA systems

被引：0
|
作者：
Saito, M [1 ]
Yamazato, T
Katayama, M
Ogawa, A
机构：
[1] Nagoya Univ, Grad Sch Engn, Nagoya, Aichi 4648603, Japan
[2] Nagoya Univ, Ctr Informat Media Studies, Nagoya, Aichi 4648603, Japan
来源：
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES | 1998年 / E81A卷 / 11期
关键词：
CDMA slotted ALOHA system; QS-sequences; access timing error; orthogonal Gold sequences; flat fading channel;
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
One of unique features of COMA slotted ALOHA (CDMA S-ALOHA) is that user must synchronize his transmission to given slot. Thus orthogonal sequence as spreading sequence would achieve ideal throughput if each of packets accomplish perfect synchronization. In the presence of any ambiguity in synchronizations, however, quasi-synchronous (QS) sequences suit well with CDMA S-ALOHA system. In this paper, we introduce new OS-sequences obtained from the orthogonal Gold sequences and discuss their performance when applying to CDMA S-ALOHA systems. As a result, withstanding to access timing error, good performance is ensured with this sequence under the environment of AWGN, MAI (multiple access interference) and frequency non-selective fading, that is, micro or pico cellular systems and indoor wireless LANs.
引用
收藏
页码：2274 / 2280
页数：7
相关论文
共 50 条
  • [1] Sequences selection for quasi-synchronous CDMA systems
    Jeszensky, PJE
    Fitzgerald, JR
    1998 IEEE 5TH INTERNATIONAL SYMPOSIUM ON SPREAD SPECTRUM TECHNIQUES AND APPLICATIONS - PROCEEDINGS, VOLS 1-3, 1998, : 706 - 708
  • [2] Application of Zero Correlation Zone Sequences in Quasi-synchronous CDMA Systems
    LI Shu-feng
    Semiconductor Photonics and Technology, 2007, (01) : 39 - 42
  • [3] Generation of sets of sequences suitable for multicode transmission in quasi-synchronous CDMA systems
    Saito, M
    Yamazato, T
    Okada, H
    Katayama, M
    Ogawa, A
    IEICE TRANSACTIONS ON COMMUNICATIONS, 2001, E84B (03) : 576 - 580
  • [4] Performance evaluation for a new quasi-synchronous CDMA system employing generalized orthogonal sequences
    Hao, L
    Fan, PZ
    IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, 2003, E86D (09): : 1513 - 1524
  • [5] Multicarrier orthogonal CDMA signals for quasi-synchronous communication systems
    DaSilva, Victor M.
    Sousa, Elvino S.
    IEEE Journal on Selected Areas in Communications, 1994, 12 (05): : 842 - 852
  • [6] Linear Equalizers for Quasi-synchronous Block Spreading CDMA Systems
    Bocus, Mohammud Z.
    Wang, Yue
    Coon, Justin P.
    GLOBECOM 2009 - 2009 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-8, 2009, : 5288 - +
  • [7] Frequency hopping sequences with few-hit zone for quasi-synchronous FH-CDMA systems
    Zhang, Zhenyu
    Huang, Jianming
    Shi, Zhiyong
    Xuan, Guixin
    2006 INTERNATIONAL CONFERENCE ON COMMUNICATIONS, CIRCUITS AND SYSTEMS PROCEEDINGS, VOLS 1-4: VOL 1: SIGNAL PROCESSING, 2006, : 670 - +
  • [8] Analysis of uplink quasi-synchronous CDMA system using orthogonal polyphase sequences
    Khan, Zaheer
    2007 IFIP INTERNATIONAL CONFERENCE ON WIRELESS AND OPTICAL COMMUNICATIONS NETWORKS, 2007, : 361 - 364
  • [9] Sequence assignment of Walsh-Hadamard sequences for quasi-synchronous multi-code CDMA systems
    Saito, M
    Yamamoto, H
    5TH INTERNATIONAL SYMPOSIUM ON WIRELESS PERSONAL MULTIMEDIA COMMUNICATIONS, VOLS 1-3, PROCEEDINGS, 2002, : 673 - 677
  • [10] Decorrelator detection for quasi-synchronous multicarrier CDMA
    Iltis, RA
    MILCOM 97 PROCEEDINGS, VOLS 1-3, 1997, : 862 - 866
12345