[1]冀保峰,杨绿溪.基于干扰保护的同信道干扰下VHT WLANs性能[J].东南大学学报(自然科学版),2013,43(2):258-262.[doi:10.3969/j.issn.1001-0505.2013.02.006]
 Ji Baofeng,Yang Luxi.Performance of VHT WLANs under co-channel interference based on interference protection[J].Journal of Southeast University (Natural Science Edition),2013,43(2):258-262.[doi:10.3969/j.issn.1001-0505.2013.02.006]
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基于干扰保护的同信道干扰下VHT WLANs性能()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
43
期数:
2013年第2期
页码:
258-262
栏目:
计算机科学与工程
出版日期:
2013-03-20

文章信息/Info

Title:
Performance of VHT WLANs under co-channel interference based on interference protection
作者:
冀保峰杨绿溪
东南大学信息科学与工程学院, 南京210096
Author(s):
Ji Baofeng Yang Luxi
School of Information Science and Engineering, Southeast University, Nanjing 210096, China
关键词:
超高吞吐量无线局域网 同信道干扰 分组
Keywords:
very high throughput WLANs(wireless local area networks) co-channel interference group
分类号:
TP393.17
DOI:
10.3969/j.issn.1001-0505.2013.02.006
摘要:
首先针对同信道干扰下超高吞吐量无线局域网的场景,分析了热点覆盖位置服从泊松分布,多用户预编码采用线性预编码时用户端的性能,得到了用户端的信干比概率密度函数表达式,并在此基础上推导出用户端的误码率以及热点与用户之间的容量表达式.结果表明,由于聚合干扰的存在用户的性能随着热点天线数的增加而降低.然后针对同信道干扰下超高吞吐量无线局域网载波侦听机制的缺陷,提出了基于干扰保护的站点接入机制,即当信干比在小于干扰保护门限时站点参与信道使用权的竞争和数据的发送,使得超高吞吐量无线局域网在同信道干扰下能最大化系统吞吐量,最后通过仿真验证了分析的正确性和所提方案的有效性.
Abstract:
Aiming at the scenario of very high throughput wireless local area networks(VHT WLANs)under co-channel interference, the users performance of the locations of access point coverage followed Poisson distribution and multi-user pre-coding adopted linear pre-coding is analyzed. The probability density function(PDF)expression of the users SIR(signal to aggregated interference ratio)is derived. On this basis, the expressions of users BER(bit error ratio)and capacity between access point and users are obtained. The results illustrate that the users performance decreases with the increase of the antenna number because of aggregated interference. In order to solve the drawbacks of carrier sensing mechanism of VHT WLANs under co-channel interference, the access mechanism based on interference protection is proposed. Thus, the station can contend the channel right and prepare for data transmission when the users SIR is less than the protection threshold, indicating the VHT WLAN can maximize the system throughput under co-channel interference. Finally, the correctness of analysis and the effectiveness of the proposed scheme are verified through simulations.

参考文献/References:

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相似文献/References:

[1]曹敦,孟鑫,江彬,等.基于Cholesky分解的MIMO-OFDM系统同信道干扰抑制方法[J].东南大学学报(自然科学版),2015,45(1):1.[doi:10.3969/j.issn.1001-0505.2015.01.001]
 Cao Dun,Meng Xin,Jiang Bin,et al.Cholesky-decompositon-based co-channel interference suppression method in MIMO-OFDM systems[J].Journal of Southeast University (Natural Science Edition),2015,45(2):1.[doi:10.3969/j.issn.1001-0505.2015.01.001]

备注/Memo

备注/Memo:
作者简介: 冀保峰(1985—), 男, 博士生;杨绿溪(联系人), 男, 博士,教授,博士生导师, lxyang@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(60902012, 61071113)、国家科技重大专项资助项目(2011ZX03003-001-02, 2011ZX03003-003-03)、教育部新世纪优秀人才资助项目(NCET-11-0088)、教育部博士点基金资助项目(20090092120013, 20100092110010)、江苏省自然科学基金资助项目(BK2011019,BK2011598)、江苏省工业支撑资助项目(BE2012167).
引文格式: 冀保峰,杨绿溪.基于干扰保护的同信道干扰下VHT WLANs性能[J].东南大学学报:自然科学版,2013,43(2):258-262. [doi:10.3969/j.issn.1001-0505.2013.02.006]
更新日期/Last Update: 2013-03-20