Impact of Frequency Offset on the Performance of Uplink OFDM-NOMA Systems

Non-Orthogonal Multiple Access (NOMA) with a successive interference canceller (SIC) is a promising multiple access scheme for future 5G networks. In this paper, we consider the impact of the local oscillator frequency offset existing between the base station (BS) and the user equipment (UE) on the uplink performance of the system. We derive the closed-form expression of the channel capacity and bit error rate. Results show that the frequency offset leads to significant performance degradation of the system even with a small value. The error floor of BER is more than 10−3 when the frequency offset is more than 2 parts per million. Meanwhile, the frequency offset limits capacities to finite ceilings.

[1]  Zhiguo Ding,et al.  A General Power Allocation Scheme to Guarantee Quality of Service in Downlink and Uplink NOMA Systems , 2016, IEEE Transactions on Wireless Communications.

[2]  Ioannis Krikidis,et al.  Fairness for Non-Orthogonal Multiple Access in 5G Systems , 2015, IEEE Signal Processing Letters.

[3]  Jing Wang,et al.  Uplink Nonorthogonal Multiple Access in 5G Systems , 2016, IEEE Communications Letters.

[4]  Marc Moeneclaey,et al.  BER sensitivity of OFDM systems to carrier frequency offset and Wiener phase noise , 1995, IEEE Trans. Commun..

[5]  Muhammad Imran,et al.  Non-Orthogonal Multiple Access (NOMA) for cellular future radio access , 2017 .

[6]  H. Vincent Poor,et al.  A General MIMO Framework for NOMA Downlink and Uplink Transmission Based on Signal Alignment , 2015, IEEE Transactions on Wireless Communications.

[7]  Muhammad Ali Imran,et al.  Uplink non-orthogonal multiple access for 5G wireless networks , 2014, 2014 11th International Symposium on Wireless Communications Systems (ISWCS).

[8]  Octavia A. Dobre,et al.  NOMA in 5G Systems: Exciting Possibilities for Enhancing Spectral Efficiency , 2017, ArXiv.

[9]  Leonard J. Cimini,et al.  Analysis and Simulation of a Digital Mobile Channel Using Orthogonal Frequency Division Multiplexing , 1985, IEEE Trans. Commun..

[10]  Pingzhi Fan,et al.  Impact of User Pairing on 5G Nonorthogonal Multiple-Access Downlink Transmissions , 2016, IEEE Transactions on Vehicular Technology.

[11]  Ekram Hossain,et al.  Dynamic User Clustering and Power Allocation for Uplink and Downlink Non-Orthogonal Multiple Access (NOMA) Systems , 2016, IEEE Access.

[12]  Jack M. Holtzman,et al.  Analysis of a simple successive interference cancellation scheme in a DS/CDMA system , 1994, IEEE J. Sel. Areas Commun..

[13]  Zhiguo Ding,et al.  Nonorthogonal Multiple Access for 5G , 2018, 5G Networks: Fundamental Requirements, Enabling Technologies, and Operations Management.

[14]  Mahmoud Ferdosizadeh Naeiny,et al.  Burst transmission symbol synchronization in the presence of cycle slip arising from different clock frequencies , 2018, EURASIP J. Adv. Signal Process..

[15]  Pingzhi Fan,et al.  On the Performance of Non-Orthogonal Multiple Access in 5G Systems with Randomly Deployed Users , 2014, IEEE Signal Processing Letters.

[16]  Jun Zhang,et al.  Optimal User Pairing for Downlink Non-Orthogonal Multiple Access (NOMA) , 2019, IEEE Wireless Communications Letters.

[17]  Dong In Kim,et al.  Non-Orthogonal Multiple Access (NOMA) in Cellular Uplink and Downlink: Challenges and Enabling Techniques , 2016, ArXiv.