#### DMCA

## Mitigation of Sounding Pilot Contamination in Massive MIMO Systems

Citations: | 1 - 0 self |

### Citations

261 |
Noncooperative cellular wireless with unlimited numbers of base station antennas,”
- Marzetta
- 2010
(Show Context)
Citation Context ...sting schemes [1]. In MMIMO systems, uplink sounding techniques are commonly adopted for downlink channel information feedback, which use the channel reciprocity of time-division duplex (TDD) systems =-=[2]-=-. They show a critical impact on system performance since the number of sounding users is directly related with the number of serviced users in downlink, and the channel estimation error heavily affec... |

252 | Rayleigh fading channels in mobile digital communication systems Part I: characterization,"
- Sklar
- 1997
(Show Context)
Citation Context ...ser mobility of up to 100 km/h (i.e., coherence time of 1:6ms), which can provide large T enough to support 12 sounding symbols (e.g., T 24 symbols when the symbol time is 66:7s as in LTE systems) =-=[8]-=-. Assume that the path loss exponent is 3.8 and the standard deviation of shadowfading is 8dB [2]. For cell configuration in simulation, we assume that each cell has the radius of 300m and evaluate th... |

199 | Stochastic properties of the random waypoint mobility model. ACM/Kluwer Wireless Networks: Special Issue on Modeling and Analysis of Mobile Networks
- Bettstetter, Hartenstein, et al.
- 2004
(Show Context)
Citation Context ...sts/s) and the service time is an exponentially distributed random variable with the average of 15 s. For user mobility, we use the random waypoint model where a user chooses its destination randomly =-=[9]-=-. B. Analysis and simulation results according to parameters H Fig. 3 shows the service failure probability Psf with respect to H with F=0.2 and 0.4. It can be observed that the analysis and simulatio... |

111 | Multiuser MIMO achievable rates with downlink training and channel state feedback,”
- Caire, Jindal, et al.
- 2010
(Show Context)
Citation Context ... performance since the number of sounding users is directly related with the number of serviced users in downlink, and the channel estimation error heavily affects the accuracy of a pre-coding matrix =-=[3]-=-. Despite of its importance, few researchers have focused on the design of sounding techniques to the best of our knowledge [4]. M-MIMO systems need to support very high mobility [2], incurring mobile... |

104 | Energy and spectral efficiency of very large multiuser
- Ngo, Larsson, et al.
- 2013
(Show Context)
Citation Context ...ve multiple-input multiple-output (MMIMO) systems make base stations transmit downlink signals with the use of an unlimited number of antennas, thereby performing far better than the existing schemes =-=[1]-=-. In MMIMO systems, uplink sounding techniques are commonly adopted for downlink channel information feedback, which use the channel reciprocity of time-division duplex (TDD) systems [2]. They show a ... |

100 | Massive MIMO in the UL/DL of cellular networks: How many antennas do we need?,”
- Hoydis, Brink, et al.
- 2013
(Show Context)
Citation Context ...MIMO system. B. Proposed scheme If error free channel information is available, the M-MIMO system can service multiple users with the same downlink resources without suffering inter cell interference =-=[6]-=-. However, conventional non-cooperative M-MIMO systems may suffer inter cell interference since non-cooperative sounding resource assignment schemes cannot provide accurate channel information due to ... |

37 |
Efficient dynamic channel allocation techniques with handover queuing for mobile satellite networks
- Re, Fantacci, et al.
- 1995
(Show Context)
Citation Context ...ng a Markov chain. 3) Markov model for sounding sequence assignment: Now we solve the sounding resource assignment problem by using a Markov chain model. For analysis we use the following assumptions =-=[7]-=-. (a) New arrivals and handover arrivals are two independent Poisson processes with mean rates and h, respectively. (b) The sequence holding times are approximated as exponentially distributed rand... |

2 |
et al., Pilot contamination problem in multi-cell TDD systems
- Jose
(Show Context)
Citation Context ...ts. However, the performance of cell edge users is significantly degraded due to pilot contamination when each cell exploits the whole sounding resources for its own users in a non-cooperative manner =-=[5]-=-. To alleviate these problems, the sounding resource reuse method can be used among adjacent cells in a cooperative manner. It provides high signal to interference ratio (SIR) for each cell edge user ... |