Abstract
Fractional frequency reuse (FFR) and soft frequency reuse (SFR) systems are an efficient cellular interference management technique to reduce inter-cell interference in multi-cell OFDMA networks. In this paper, a new and unified analytical framework for performance evaluation for both systems over a composite fading environment is presented. Explicit expressions are obtained for the area spectral efficiency (ASE) with both FFR and SFR, under fully loaded and partially loaded systems for downlink and uplink, and in generalized frequency reuse factor. The presented numerical result provides useful system design guidelines between the two systems. It is demonstrated that SFR outperforms FFR in a partially loaded scenario while the opposite is true for fully loaded system. The mathematical model is then extended to include the analysis of elastic data traffic in FFR system.
| Original language | English |
|---|---|
| Pages (from-to) | 3692-3705 |
| Number of pages | 14 |
| Journal | Communications, IEEE Transactions on |
| Volume | 62 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 1 Oct 2014 |
| Event | IEEE Transactions on Communications - Duration: 1 Jan 1824 → … |
Keywords
- OFDM modulation
- cellular radio
- frequency division multiple access
- interference suppression
- mobility management (mobile radio)
- numerical analysis
- performance evaluation
- radio links
- radiofrequency interference
- telecommunication traffic
- ASE
- FFR technique
- SFR system
- area spectral efficiency
- cellular interference management technique
- composite fading environment
- elastic data traffic
- fractional frequency reuse technique
- intercell interference reduction
- mathematical model
- multicell OFDMA network
- soft frequency reuse system
- Base stations
- Downlink
- Fading
- Interference
- Nickel
- OFDM
- Signal to noise ratio
- Area spectral efficiency
- Nakagami fading
- OFDMA
- co-channel interference
- fractional frequency reuse
- log-normal shadowing