OAM Transmission in Sparse Multipath Environments with Fading

Orbital angular momentum (OAM), which has attracted much attention recently, is a potential technology to achieve high capacity for future wireless communications. In existing literatures, the OAM-based transmission is assumed to be used in ideal line-of-sight (LoS) scenarios. The non-line-of-sight (NLoS) scenarios, however, is more practical for wireless communications. In this paper, we focus on OAM-based transmission in sparse multipath environments. We build the OAM-based transmission model for Rician fading channels and derive the corresponding capacity of radio vortex wireless communications. Also, we analyze the key parameters of OAM-based transmission in sparse multipath environments. Conducted numerical results verify that the capacity of OAM-based transmission is superior to that of multiple-input-multiple-output (MIMO) based transmission in sparse multipath environments.

[1]  Zan Li,et al.  Orbital-Angular-Momentum Embedded Massive MIMO: Achieving Multiplicative Spectrum-Efficiency for mmWave Communications , 2018, IEEE Access.

[2]  Yang Wang,et al.  OFDM-OAM Modulation for Future Wireless Communications , 2019, IEEE Access.

[3]  Hailin Zhang,et al.  High Reliable Orbital Angular Momentum Wireless Communications for Space Information Networks , 2019, 2019 11th International Conference on Wireless Communications and Signal Processing (WCSP).

[4]  Xiang Cheng,et al.  Characterization of Propagation Channels , 2016 .

[5]  K. Forozesh,et al.  Orbital Angular Momentum in Radio—A System Study , 2010, IEEE Transactions on Antennas and Propagation.

[6]  Jiandong Li,et al.  Beam Steering for the Misalignment in UCA-Based OAM Communication Systems , 2018, IEEE Wireless Communications Letters.

[7]  Yuqing Yuan,et al.  Capacity analysis of UCA-based OAM multiplexing communication system , 2015, 2015 International Conference on Wireless Communications & Signal Processing (WCSP).

[8]  Ertugrul Basar,et al.  Orbital Angular Momentum With Index Modulation , 2018, IEEE Transactions on Wireless Communications.

[9]  Hailin Zhang,et al.  Fractal uniform circular arrays based multi-orbital-angular-momentum-mode multiplexing vortex radio MIMO , 2018, China Communications.

[10]  Xiang-Gen Xia,et al.  Orbital-Angular-Momentum Versus MIMO: Orthogonality, Degree of Freedom, and Capacity , 2018, 2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC).

[11]  Xiaohu Ge,et al.  5G wireless communication systems: prospects and challenges [Guest Editorial] , 2014 .

[12]  O. Edfors,et al.  Is Orbital Angular Momentum (OAM) Based Radio Communication an Unexploited Area? , 2012, IEEE Transactions on Antennas and Propagation.

[13]  H. Then,et al.  Utilization of photon orbital angular momentum in the low-frequency radio domain. , 2007, Physical review letters.

[14]  Matthias Pätzold,et al.  Sparse multipath channels: Modelling, analysis, and simulation , 2013, 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC).

[15]  Hailin Zhang,et al.  Joint OAM Multiplexing and OFDM in Sparse Multipath Environments , 2020, IEEE Transactions on Vehicular Technology.

[16]  Xiqi Gao,et al.  Cellular architecture and key technologies for 5G wireless communication networks , 2014, IEEE Communications Magazine.

[17]  Tao Jiang,et al.  Radio Vortex–Multiple-Input Multiple-Output Communication Systems With High Capacity , 2015, IEEE Access.

[18]  Hyundong Shin,et al.  Capacity of multiple-antenna fading channels: spatial fading correlation, double scattering, and keyhole , 2003, IEEE Trans. Inf. Theory.

[19]  Hailin Zhang,et al.  Orbital Angular Momentum for Wireless Communications , 2018, IEEE Wireless Communications.

[20]  Yunkai Deng,et al.  Chirp Signal Transmission and Reception With Orbital Angular Momentum Multiplexing , 2019, IEEE Antennas and Wireless Propagation Letters.

[21]  Xiang-Gen Xia,et al.  A Simple Channel Independent Beamforming Scheme With Parallel Uniform Circular Array , 2019, IEEE Communications Letters.