一级黄色片免费播放|中国黄色视频播放片|日本三级a|可以直接考播黄片影视免费一级毛片

高級搜索

留言板

尊敬的讀者、作者、審稿人, 關于本刊的投稿、審稿、編輯和出版的任何問題, 您可以本頁添加留言。我們將盡快給您答復。謝謝您的支持!

姓名
郵箱
手機號碼
標題
留言內(nèi)容
驗證碼

WPAN/WLAN應用環(huán)境下的一類混合鏈路自適應算法

錢小勇,  沈連豐,  胡靜,  許國軍,  徐平平

錢小勇, 沈連豐, 胡靜, 許國軍, 徐平平. WPAN/WLAN應用環(huán)境下的一類混合鏈路自適應算法[J]. 電子與信息學報, 2003, 25(4): 509-514.
引用本文: 錢小勇, 沈連豐, 胡靜, 許國軍, 徐平平. WPAN/WLAN應用環(huán)境下的一類混合鏈路自適應算法[J]. 電子與信息學報, 2003, 25(4): 509-514.
Qian Xiaoyong, Shen Lianfeng, Hu Jing, Xu Guojun, Xu Pingping . Hybrid link adaptive algorithms for wpan/wlan applications[J]. Journal of Electronics & Information Technology, 2003, 25(4): 509-514.
Citation: Qian Xiaoyong, Shen Lianfeng, Hu Jing, Xu Guojun, Xu Pingping . Hybrid link adaptive algorithms for wpan/wlan applications[J]. Journal of Electronics & Information Technology, 2003, 25(4): 509-514.

WPAN/WLAN應用環(huán)境下的一類混合鏈路自適應算法

Hybrid link adaptive algorithms for wpan/wlan applications

  • 摘要: 該文分析了基于包錯誤率(PER)測量及基于我干比(C/I)估計的鏈路自適應算法的優(yōu)缺點,在此基礎上提出了兩種WPAN/WLAN應用環(huán)境下的混合算法,即同時考慮PER與C/I的混合算法和選擇性考慮PER與C/I的混合算法,并對它們進行了理論分析和數(shù)值仿真。結果表明,在理想的單用戶接入情況下,同時考慮PER與C/I的混合算法的吞吐量要大于其它算法。在實際的多用戶接入情況下,分配給每個用戶的資源相對較少,此時,選擇性考慮PER與C/I的混合算法能夠減小接收包數(shù)目較少或C/I估計誤差大大以及信道誤判等因素造成的吞吐量損失,達到比其它算法更大的網(wǎng)絡吞吐量。
    Abstract: In this paper, the characteristics of two link adaptive algorithms based on Carrier to Interference ratio (C/I) and Packet Error Rate (PER) are discussed. Furthermore, two hybrid algorithms of link adaptation are proposed on the analysis of the existing algorithms. One is named integrated hybrid method, in which PER and C/I are taken as the estimates of channel quality simultaneously. The other that selectively considers C/I or PER as the estimates of channel quality at a time is called selective hybrid method. Simulation results indicate that the integrated hybrid method can achieve the maximum throughputs at an ideal uni-user scenario. While at a multi-user scenario, a few received packets of one user lead to the large variance of PER values, which results in throughput loss. Therefore, at the scenario above, selective hybrid method is superior to other methods in term of network throughputs.
    • HTML全文
  • O. Queseth, F. Gessler, M. Frodigh, Algorithms for link adaptation in GPRS, Proceedings of Vehicular Technology Conference, 1999 IEEE 49th, Houston, 1999, vol.2,943-947.[2]J. C-I Chuang, Improvement of data throughput in wireless packet systems with link adaptation and efficient frequency reuse, Proceedings of Vehicular Technology Conference, 1999 IEEE 49th,Houston, 1999, vol.1,821-825.[3]Zihuai Lin, G. Malmgren, J. Torsner, System performance analysis of link adaptation in HIPERLAN type 2, Proceedings of Vehicular Technology Conference, 2000 IEEE 52th, Boston, 2000,vol.4, 1719-1725.[4]J. Torsner, G. Malmgren, Radio network solutions for HIPERLAN/2, Proceedings of Vehicular Technology Conference, 1999 IEEE 49th, Houston, 1999, vol.2, 1217-1221.[5]J. Khun-Jush et al., Overview and performance of HIPERLAN type 2-a standard for broadband wireless communications, Proceedings of Vehicular Technology Conference, 2000 IEEE 51th,Tokyo, 2000, vol.1, 112-117.[6]Broadband Radio Access Networks (BRAN), HIgh PErformance Radio Local Area Network (HIPERLAN) type 2: requirements and architectures for wireless broadband access, ETSI (No.101 031), 1999.[7]Broadband Radio Access Networks (BRAN), HIgh PErformance Radio Local Area Network (HIPERLAN) type 2: system overview, ETSI (No. 101 683 V1.1.1), 2000.J. Medbo, J. E Berg, Simple and accurate path loss modeling at 5GHz in indoor environments with corridors, Proceedings of Vehicular Technology Conference, 2000 IEEE 52th, Boston, 2000:vol.1, 30-36.
  • 加載中
計量
  • 文章訪問數(shù):  2154
  • HTML全文瀏覽量:  97
  • PDF下載量:  447
  • 被引次數(shù): 0
出版歷程
  • 收稿日期:  2001-11-05
  • 修回日期:  2002-06-20
  • 刊出日期:  2003-04-19

目錄

    /

    返回文章
    返回