|
|
- 2018
时变信道下车载HDAF协作通信误码性能分析
|
Abstract:
车辆快速移动带来的信道时变特性降低了智能车载协作系统的误码性能。因此，该文提出了一种基于一阶自回归模型（AR1）的车载混合译码放大转发（HDAF）协作通信方法，该方法通过AR1的多普勒频偏相关系数来刻画时变信道特性，根据信道增益自适应选取HDAF协作通信方式，提升了智能交通系统的可控性安全。同时，分析了车载移动速度和信道状态信息（CSI）估计精度对误码性能的影响。数值分析表明，车载系统能通过增加CSI的估计精度，有效地减少车辆快速移动引起的误码平顶值。该方法相对于放大转发（AF）和解码转发（DF）协作通信方式，平均误码性能分别提高了约3.6 dB和1.5 dB。
| [1] | XIAO H L, HU Y, YAN K, et al. Power allocation and relay selection for multi-source multi-relay cooperative vehicular networks[J]. IEEE Transactions on Intelligent Transportation Systems, 2016, 17(11):3297-3305. |
| [2] | SANG W K. Physical integrity check in cooperative relay communications[J]. IEEE Transactions on Wireless Communications, 2015, 14(11):6401-6413. |
| [3] | ZHU Y, SONG L X, WU S E, et al. Cooperative stepwise relaying and combining for multihop vehicular wireless communication[J]. IEEE Transactions on Vehicular Technology, 2015, 64(6):2663-2671. |
| [4] | SCHWARZ S, PHILOSOF T, RUPP M. Signal processing challenges in cellular-assisted vehicular communications:efforts and developments within 3GPP LTE and beyond[J]. IEEE Signal Processing Magazine, 2017, 34(2):47-59. |
| [5] | ZHAN Y, TIAN F, SONG B. Social vehicle swarms:a novel perspective on socially aware vehicular communication architecture[J]. IEEE Wireless Communications, 2016, 23(4):82-89. |
| [6] | 廖丹, 孙罡, 杨晓玲, 等. 车载自组织网络单接口多信道的切换方法[J]. 电子科技大学学报, 2015, 44(2):227-232. LIAO Dan, SUN Gang, YANG Xiao-ling, et al. Switching method of single radio multi-channels for vehicular Ad hoc network[J]. Journal of University of Electronic Science and Technology of China, 2015, 44(2):227-232. |
| [7] | KHATTABI Y, MATALGAH M. Performance analysis of multiple relay AF cooperative systems over Rayleigh time-selective fading channels with imperfect channel estimation[J]. IEEE Transactions on Vehicular Technology, 2016, 65(1):427-434. |
| [8] | CHEN H, LIU J, ZHENG L. Performance analysis of SNR based hybrid decode-amplify-forward cooperative diversity networks over Rayleigh fading channels[C]//Proc of the IEEE Wireless Communications & Networking Conference.[S.l.]:IEEE, 2010, 29(16):1-6. |
| [9] | 邱斌, 金晓晴, 蒋为, 等. 时变信道下ADF协作车载通信误码率分析[J]. 电讯技术, 2017, 57(9):1017-1022. QIU Bin, JIN Xiao-qing, JIANG Wei, et al. Symbol error rate analysis of adaptive decode-and-forward vehicular cooperative communication in time-varying channels[J]. Telecommunication Engineering, 2017, 57(9):1017-1022. |
| [10] | MICHALOPOULOS D S, SURAWEERA H A, SCHOBER R, et al. Amplify-and-forward relay selection with outdated channel estimates[J]. IEEE Transactions on Communications, 2012, 60(5):1278-1290. |
| [11] | AVEDI M R, NGUYED H H. Performance of differential amplify-and-forward relaying in multimode wireless communications[J]. IEEE Transactions on Vehicular Technology, 2013, 62(8):603-613. |
| [12] | GIANG A T, BUSSON A, LAMBERT A, et al. Spatial capacity of IEEE 802.11p-based VANET models simulations, and experimentations[J]. IEEE Transactions on Vehicular Technology, 2016, 65(8):6454-6464. |
| [13] | BAI Z Q, JIA J L, WANG C X, et al. Performance analysis of SNR-based incremental hybrid decode-amplify-forward cooperative relaying protocol[J]. IEEE Transactions on Wireless Communications, 2015, 63(6):2094-2106. |
| [14] | LI G Y, ZHAN Y G, KANG W. SER analysis and power allocation for hybrid cooperative transmission system[J]. Systems Engineering and Electronics, 2012, 23(5):661-670. |
| [15] | FETEIHA M F, UYSAL M. On the performance of MIMO cooperative transmission for broadband vehicular networks[J]. IEEE Transactions on Vehicular Technology, 2015, 64(6):2297-2305. |
| [16] | IKKI S S, DHARRAB S A, UYSAL M. Error probability of DF relaying with pilot-assisted channel estimation over time varying fading channels[J]. IEEE Transactions on Vehicular Technology, 2012, 61(1):393-397. |
| [17] | ZHOU W X, WU J X, FAN P Z. High mobility wireless communications with Doppler diversity:Fundamental performance limits[J]. IEEE Transactions on Wireless Communications, 2015, 14(12):6981-6992. |
| [18] | TORABI M, FRIGOM J F, HACCOUM D. Performance analysis of adaptive M-ary quadrature amplitude modulation for amplify-and-forward opportunistic relaying under outdated channel state information[J]. IET Communications, 2013, 11(7):1163-1175. |
