Si-Nian Jin;Dian-Wu Yue;Gehui Lei;Jitong Ma;Moran Ju
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引用次数: 0
Abstract
This paper studies an uplink cell-free massive multiple-input multiple-output (MIMO) system with imperfect channel state information and maximum-ratio combining detectors over Rayleigh fading channel. For such a system, this paper analyzes the performance of symbol error rate (SER), which plays a key role in system reliability. Firstly, the probability density function of the desired signal and the equivalent noise are analytically calculated for M-ary pulse amplitude modulation, M-ary quadrature amplitude modulation, and M-ary phase-shift keying, respectively. Next, based on these analyses, the novel analytical expressions for the SER of different modulations are derived, which is verified by numerical results. Then, in order to enhance the SER performance of all users in different geographical locations, a geometric programming based power control (GPPC) algorithm is proposed. Finally, numerical results show that compared with four benchmark schemes of the full power algorithm, the fractional power control algorithm, the traditional max-min fairness power control algorithm, and the genetic algorithm, the proposed GPPC algorithm can effectively minimize the maximum SER among all users through collaborative control of the power control coefficient while ensuring lower computational complexity.
期刊介绍：
The scope of the Transactions is threefold (which was approved by the IEEE Periodicals Committee in 1967) and is published on the journal website as follows: Communications: The use of mobile radio on land, sea, and air, including cellular radio, two-way radio, and one-way radio, with applications to dispatch and control vehicles, mobile radiotelephone, radio paging, and status monitoring and reporting. Related areas include spectrum usage, component radio equipment such as cavities and antennas, compute control for radio systems, digital modulation and transmission techniques, mobile radio circuit design, radio propagation for vehicular communications, effects of ignition noise and radio frequency interference, and consideration of the vehicle as part of the radio operating environment. Transportation Systems: The use of electronic technology for the control of ground transportation systems including, but not limited to, traffic aid systems; traffic control systems; automatic vehicle identification, location, and monitoring systems; automated transport systems, with single and multiple vehicle control; and moving walkways or people-movers. Vehicular Electronics: The use of electronic or electrical components and systems for control, propulsion, or auxiliary functions, including but not limited to, electronic controls for engineer, drive train, convenience, safety, and other vehicle systems; sensors, actuators, and microprocessors for onboard use; electronic fuel control systems; vehicle electrical components and systems collision avoidance systems; electromagnetic compatibility in the vehicle environment; and electric vehicles and controls.
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