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Study on Coverage of Full Frequency Reuse in FFR Systems Based on Outage Probability
- Study on Coverage of Full Frequency Reuse in FFR Systems Based on Outage Probability
- Chang, Seok-Ho; Park, Hee-Gu; Kim, Sang-Hyo; Choi, Jihwan P.
- DGIST Authors
- Choi, Jihwan P.
- Issue Date
- IEEE Transactions on Communications, 66(11), 5828-5843
- Article Type
- Bandwidth; Base stations; Block codes; Communication chBase station power; Cellular networks; cellular networks; Downlink; fractional frequency reuse (FFR); full frequency reuse coverage; Interference; multiple-input multiple-output (MIMO); orthogonal space-time block codes (OSTBC); outage probability; Power system reliability; Probability; Signal to noise ratio; Throughput; annels (information theory); Feedback control; MIMO systems; Mobile ad hoc networks; Mobile telecommunication systems; Probability; Quality of service; Radio communication; Signal to noise ratio; Space time codes; Space-time block coding (STBC); Telecommunication repeaters; Throughput; Wave interference; Base station power; Cellular network; Downlink; Fractional frequency reuses (FFR); Full frequency reuse; Orthogonal space-time block codes; Outage probability; Power system reliability; Outages
- A fractional frequency reuse (FFR) system is an inter-cell interference coordination scheme used in cellular networks. In FFR systems, the available bandwidth is partitioned into orthogonal subbands such that users near the cell center adopt subbands of a frequency reuse (FR) factor equal to one (i.e., Full FR), and users near the cell edge adopt the subbands of an FR factor greater than one (i.e., Partial FR). The proper design of Full FR coverage, which is used to distinguish Full FR regions from Partial FR regions, plays a critical role in FFR system performance. This paper studies the optimal Full FR coverage that maximizes system throughput in the downlink in multiple-input multiple-output (MIMO) cellular networks. For MIMO systems, orthogonal space-time block codes are considered. We analytically compare the outage probabilities of Full FR and Partial FR for a given user’s location, where the outage probability is evaluated through small-scale multipath fading. By doing so, subject to the constraint that a given target outage probability (quality-of-service) is satisfied, the optimal Full FR coverage is analyzed as a function of base station (BS) power. We prove that the optimal Full FR coverage is a non-increasing function of BS power when the powers of all BSs in the network are scaled up or down at the same rate. This result offers insight into the design of Full FR coverage in relation to BS power; we gain insight into the complicated relationship between crucial FFR design parameters. IEEE
- Institute of Electrical and Electronics Engineers Inc.
- Related Researcher
Choi, Jihwan P.
NCRG(Networks and Communications Research Group)
Wireless and space communication systems; Cross-layer network design; 위성 통신 네트워크
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- Department of Information and Communication EngineeringNCRG(Networks and Communications Research Group)1. Journal Articles
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