A New Method in Pilot Reuse Factor Selection in Spectrum Efficient Massive MIMO Systems
نویسندگان
چکیده
منابع مشابه
Uncoordinated pilot decontamination in massive MIMO systems
This work concerns wireless cellular networks applying time division duplexing (TDD) massive multiple-input multiple-output (MIMO) technology. Such systems suffer from pilot contamination during channel estimation, due to the shortage of orthogonal pilot sequences. This paper presents a solution based on pilot sequence hopping, which provides a randomization of the pilot contamination. It is sh...
متن کاملMulti-cell massive MIMO transmission with coordinated pilot reuse
In this paper, we propose a coordinated pilot reuse (CPR) approach to reduce the pilot overhead for multi-cell massive multi-input multi-output transmission. Unlike the conventional multi-cell pilot reuse approach in which pilots can only be reused among different cells, the proposed CPR approach allows pilots to be reused among both inter-cell and intra-cell user equipments, and thus, pilot ov...
متن کاملPilot Reuse Factor with Large Scale Fading Precoding for Massive MIMO
The fundamental limitation of massive MIMO technology is pilot contamination effect. This effect occurs during uplink training when terminals use the same orthogonal signals. In this paper, a pilot reuse factor with large scale fading precoding is proposed to mitigate the pilot contamination effect. The pilot reuse factor is designed to assign unique orthogonal signals to the adjacent cells. Th...
متن کاملPilot Coordination in CDI Precoded Massive MIMO Systems
Pilot contamination severely degrades the achievable rates in massive MIMO systems. To resolve the problem, many channel state information (CSI) and channel distribution information (CDI) methods were developed. This paper presents a CDI based pilot coordination method that leads to a considerable improvement in the achievable sum rate. It also shows that pilot assignment can drastically affect...
متن کاملPilot Contamination in Small-Cell Massive MIMO Systems
The increasing demand for wireless data services requires massive network densification which is neither economically nor ecologically feasible. The concept of cell-size reduction provides an effective and simple solution to this problem. Small-Cell Networks (SCN) are one of the promising architectures based on this idea. Generally, a SCN is a cellular network where the size of the cells are ve...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Elektronika ir Elektrotechnika
سال: 2019
ISSN: 2029-5731,1392-1215
DOI: 10.5755/j01.eie.25.6.24829