Improving LTE-A indoor capacity using indoor relay

Balume Mugaruka, P. K. Langat, Jaafar A. Aldhaibani, A. Yahya

Research output: Contribution to journalArticlepeer-review


LTE-Advanced is essential to provide high transmission capacity and broad coverage network from the distance near to the base station up to the cell edge and also to shadow areas such as indoor environments. Due to the indoor penetration loss, the signal from the outdoor base station reaches the indoor users with low strength leading to low signal plus interferences and noise ratio (SINR), hence providing low capacity. This paper provides a way of improving indoor capacity using an outdoor base station of one antenna, indoor relay with one receiving directional antenna and one transmitting Omnidirectional antenna, with an indoor user with one Omni directional antenna. The impact of deploying the indoor relay to enhance the indoor users’ capacity is shown by great performance when the indoor relay is connected to the indoor relay instead of the outdoor base station. The numerical values of capacity for indoor users at different locations show +80% capacity improvement at the handover point, the capacity at 250 m is improved from 1.4bit/s/Hz to the maximum capacity (7bits/s/Hz). Also, an improvement of +60% is seen at distance from 25m to 50m for both sides of the relay location. Finally, this paper tacks on account the power balance algorithm to reduce the power consumption and giving more space to the outdoor at the cell edge.

Original languageEnglish
Pages (from-to)925-938
Number of pages14
JournalInternational Journal of Engineering Research and Technology
Issue number6
Publication statusPublished - Jan 1 2018

All Science Journal Classification (ASJC) codes

  • Software
  • Environmental Engineering
  • General Chemical Engineering
  • Energy Engineering and Power Technology
  • General Engineering
  • Hardware and Architecture
  • Computer Networks and Communications
  • Artificial Intelligence


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