Performance evaluation of coordinated multipoint at Millimeter wave frequencies
Biswas, Ritayan (2016)
Biswas, Ritayan
2016
Master's Degree Programme in Electrical Engineering
Tieto- ja sähkötekniikan tiedekunta - Faculty of Computing and Electrical Engineering
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Hyväksymispäivämäärä
2016-04-06
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tty-201603243762
https://urn.fi/URN:NBN:fi:tty-201603243762
Tiivistelmä
Current cellular technologies operate in the microwave frequencies below 6 GHz. The spectrum below 6 GHz has become congested due to the various technologies that use this frequency band. This has led to a shortage in spectrum. The millimeter wave (mmWave) band offers a solution to the spectrum shortage and thus has been suggested by researchers as a technology enabling the fifth generation (5G) of cellular communications. There are large bandwidths available within the mmWave band which enables high throughput for end users. Coordinated multipoint (CoMP) is a technology that uses the coordination between two or more base stations. As a result subscribes enjoy higher throughput values. In addition, an improvement in the spectral efficiency is also achieved.
The performance of systems utilizing CoMP at mmWave frequencies is evaluated in this thesis. The simulation environment is considered in order to reflect the dense urban environment where 5G is the most likely to be deployed. Various scenarios for the coordination between cells from one or more base stations are formulated. The simulations for these CoMP scenarios are carried out at 2.1 GHz and 28 GHz frequencies with the channel bandwidth of 20 MHz. The bandwidth is increased ten times to 200 MHz and the evaluation of the system performance is carried out in order to offer a comparison as to how CoMP scenarios perform at different bandwidths at mmWave frequencies. Parameters such as received signal strength, signal-to-interference-plus-noise-ratio (SINR), spectral efficiency, area spectral efficiency and throughput are calculated. An analysis of the system performance is carried out based on these parameters.
The results indicate that the use of mmWave frequencies improves the performance of the system by improving the throughput when 200 MHz is the bandwidth used. However, the spectral efficiency decreases when the same bandwidth is used. CoMP improves the system performance with the increase in the number of coordinating points. The scenario where the most number of sectors coordinate provides the best SINR, throughput and spectral efficiency among the scenarios considered. The use of CoMP at mmWaves provides high throughput for users. The locations of the evolved NodeBs (eNBs) in practical deployments can be different in comparison with the simulation environment, which may change the performance of the systems.
The performance of systems utilizing CoMP at mmWave frequencies is evaluated in this thesis. The simulation environment is considered in order to reflect the dense urban environment where 5G is the most likely to be deployed. Various scenarios for the coordination between cells from one or more base stations are formulated. The simulations for these CoMP scenarios are carried out at 2.1 GHz and 28 GHz frequencies with the channel bandwidth of 20 MHz. The bandwidth is increased ten times to 200 MHz and the evaluation of the system performance is carried out in order to offer a comparison as to how CoMP scenarios perform at different bandwidths at mmWave frequencies. Parameters such as received signal strength, signal-to-interference-plus-noise-ratio (SINR), spectral efficiency, area spectral efficiency and throughput are calculated. An analysis of the system performance is carried out based on these parameters.
The results indicate that the use of mmWave frequencies improves the performance of the system by improving the throughput when 200 MHz is the bandwidth used. However, the spectral efficiency decreases when the same bandwidth is used. CoMP improves the system performance with the increase in the number of coordinating points. The scenario where the most number of sectors coordinate provides the best SINR, throughput and spectral efficiency among the scenarios considered. The use of CoMP at mmWaves provides high throughput for users. The locations of the evolved NodeBs (eNBs) in practical deployments can be different in comparison with the simulation environment, which may change the performance of the systems.