Abstract
We consider a massive multiple-input multiple- output system with minimum-mean-squared-error processing on the uplink. A novel analytical framework is proposed to approximate the instantaneous signal-to-interference-plus-noise- ratio (SINR) of an arbitrary user terminal, as well as, the system sum spectral efficiency. Unlike previous studies, our methodology considers spatially correlated Ricean fading, with unequal Ricean K-factors, spatial correlation matrices and link gains across all terminals. Under this fully heterogeneous setting, we demonstrate that the SINR of a terminal can be tightly approximated by a linear combination of non-central chi-squared random variables, where the scaling depends on the individual link gains, K-factors, and eigenvalues of the terminal specific correlation matrices. Our approximations remain tight across the considered spatial correlation models, K-factor models, average uplink signal-to-noise-ratios and number of receive antennas. Leveraging the general form of the SINR and sum spectral efficiency, an analytical method to approximate their statistical moments is presented utilizing the moment generating function. The generality of the aforementioned analytical results is demonstrated via several special cases of practical relevance.
Original language | English |
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Title of host publication | IEEE International Conference on Communications (ICC) 2018 |
Publisher | IEEE - Institute of Electrical and Electronics Engineers Inc. |
Number of pages | 7 |
ISBN (Electronic) | 978-1-5386-3180-5 |
ISBN (Print) | 978-1-5386-3181-2 |
DOIs | |
Publication status | Published - 2018 May 23 |
Event | IEEE International Conference on Communications (ICC) 2018 - Sheraton Kansas City Hotel, Kansas City, United States Duration: 2018 May 23 → 2018 May 27 http://icc2018.ieee-icc.org/content/welcome-ieee-icc-2018 |
Conference
Conference | IEEE International Conference on Communications (ICC) 2018 |
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Abbreviated title | ICC |
Country/Territory | United States |
City | Kansas City |
Period | 2018/05/23 → 2018/05/27 |
Internet address |
Subject classification (UKÄ)
- Communication Systems
Free keywords
- MMSE combining
- Massive MIMO
- SINR analysis
- Ricean fading channels
- Heterogeneous systems