浏览全部资源
扫码关注微信
[ "汪照,男,宁波大学硕士研究生,主要研究方向为无线通信中多用户 OFDM 及认知无线电资源分配等。" ]
[ "李有明,男,宁波大学通信技术研究所博士生导师、教授,主要研究方向为无线和有线宽带通信技术中的干扰抑制、动态资源分配、MIMO-OFDM、协作中继、认识无线电等。" ]
[ "邹婷,女,宁波大学硕士研究生,主要研究方向为电力线通信中的资源分配等。" ]
[ "刘小青,男,宁波大学硕士研究生,主要研究方向为智能电网等。" ]
[ "陈斌,男,宁波大学硕士研究生,主要研究方向为协作中继中的资源分配等。" ]
网络出版日期:2013-04,
纸质出版日期:2013-04-20
移动端阅览
汪照, 李有明, 邹婷, 等. 一种能量有效的多用户OFDM资源分配方案[J]. 电信科学, 2013,29(4):62-67.
Zhao Wang, Youming Li, Ting Zou, et al. An Energy-Efficient Multi-User’s Resource Allocation Scheme[J]. Telecommunication science, 2013, 29(4): 62-67.
汪照, 李有明, 邹婷, 等. 一种能量有效的多用户OFDM资源分配方案[J]. 电信科学, 2013,29(4):62-67. DOI: 10.3969/j.issn.1000-0801.2013.04.013.
Zhao Wang, Youming Li, Ting Zou, et al. An Energy-Efficient Multi-User’s Resource Allocation Scheme[J]. Telecommunication science, 2013, 29(4): 62-67. DOI: 10.3969/j.issn.1000-0801.2013.04.013.
在无线环境下,随着用户数的增加和速率需求的提高,基站能量消耗越来越大。因此,无线网络中能量有效化的设计变得非常必要。本文研究了一种能量有效的多用户OFDM下行链路的资源分配方案。利用分布式方式,首先根据用户的平均信道增益和最低用户比特要求,结合提出的能量有效准则思想分配子载波数;然后按照各用户分配的子载波数分配信道条件较好的信道;再对每个用户所分配的信道按照最低比特要求平均分配比特数,并利用能量有效准则做最优调整,保证功率最小。仿真结果表明,在满足各用户的误比特率及速率要求的条件下,提出的算法与静态的频分多址资源分配方式相比,功率可减小5~6 dB;同时与已有的一种经典分布式算法相比,功率可减小2~4 dB。
In wireless environment,the increases in the number of users and the demand for a higher rate have triggered rapidly booming energy consumption at the base station.Therefore,energy efficient design in wireless network has become very essential.An energy efficient multi-user OFDM downlink resource allocation scheme was studied,using the distributed way.Firstly,according to user’s average channel gain and the minimum requirements of user’s bits,subcarriers were allocated,combined with the idea of proposed energy-efficient criterion.Then better channels were assigned to each user in accordance with each user’s allocated subcarrier numbers.Again each user’s average bits were assigned on the user’s allocated subcarriers and optimal adjustment using energy-efficient criterion had to be made to ensure the minimum power.The simulation results show that under the conditions of satisfying bit-error rate and transmission rate for users,the power can be reduced by 5~6 dB in the proposed algorithm,compared with the power in the static frequency division multiple access resource allocation.Furthermore,the power can be reduced by 2~4 dB,compared with the power in a existing classical distributed algorithm.
Jang J , Lee K B . Transmit power adaptation for multi-user OFDM system . Journal on Selected Areas in Communications , 2003 , 21 ( 2 ): 171 ~ 178
Shen Z , Andrews J G , Evans B L . Adaptive resource allocation in multiuser OFDM systems with proportional rate constraints . IEEE Transactions on Wireless Communications , 2005 , 4 ( 6 ): 2726 ~ 2737
Wong I C , Evans B L . Optimal downlink OFDMA resource allocation with linear complexity to maximize ergodic rates . IEEE Transactions on Wireless Communications , 2008 , 7 ( 3 ): 962 ~ 971
Wong C Y , Cheng R S , Letaief K B , et al . Multiuser OFDM with adaptive subcarrier,bit,and power allocation . IEEE Journal on Selected Areas in Communications , 1999 , 17 ( 10 ): 1747 ~ 1758
Kivanc D , Li G , Liu H . Computationally efficient bandwidth allocation and power control for OFDMA . IEEE Transactions on Wireless Communications , 2003 , 2 ( 6 ): 1150 ~ 1158
Liang C , Brian K . An iterative resource allocation algorithm for multiuser OFDM with fairness and QoS constraints . Proceedings of IEEE 65th Vehicular Technology Conference,VTC2007Spring , Dublin,Ireland , 2007 : 2985 ~ 2989
Lee J S , Lee J Y , Lee S , et al . Resource allocation for multiclass services in multiuser OFDM systems . IEEE 5th Consumer Communications and Networking Conference , Las Vegas,NV USA , 2008 : 907 ~ 911
Lin Y B , Chiu T H , Su Y T . Optimal and near-optimal resource allocation algorithms for OFDMA networks . IEEE Transactions on Wireless Communications , 2009 , 8 ( 8 ): 4066 ~ 4077
Wong I , Evans B . Optimal downlink OFDMA resource allocation with linear complexity to maximize ergodic rates . IEEE Transations on Wireless Communications , 2008 , 7 ( 3 ): 962 ~ 971
Zhu H , Wang J . Chunk-based resource allocation in OFDMA systems-part Ⅱ:joint chunk,power and bit allocation . IEEE Transactions on Communications , 2012 , 60 ( 2 ): 499 ~ 509
Zaki A , Fapojuwo A . Optimal and efficient graph-based resource allocation algorithms for multiservice frame-based OFDMA networks . IEEE Transations on Mobile Computing , 2011 , 10 ( 8 ): 1175 ~ 1186
Ahmadi H , Chew Y H . Adaptive subcarrier and bit allocation in multiclass multiuser OFDM systems using genetic algorithms . Proceedings of IEEE 20th International Symposium on Personal,Indoor and Mobile Radio Communications , Tokyo,Japan , 2009 : 1883 ~ 1887
Sadeque S . Impact of individual and joint optimizations in multi-user OFDM resource allocation by modified PSO . Proceedings of Electrical and Computer Engineering(CCECE),Niagana Falls , Ontario,Canada , 2011 : 1233 ~ 1237
0
浏览量
565
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构