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An Improved Mathematical Scheme for LTE-Advanced Coexistence with FM Broadcasting Service
Zaid Ahmed Shamsan1,2, Abdulaziz M Al-Hetar2
1Faculty of Engineering, Al Imam Mohammad Ibn Saud Islamic University, Riyadh, Saudi Arabia.
Plos One
|November 18, 2016
Summary
A new method precisely calculates interference between LTE-Advanced and FM broadcasting. This power spectral density analysis reduces required separation, enabling more efficient radio spectrum use.
Area of Science:
- Electrical Engineering
- Telecommunications Engineering
- Signal Processing
Background:
- Wireless communication systems require compatibility analysis.
- Power spectral density (PSD) overlapping is crucial for assessing system feasibility.
- Interference between different radio services necessitates accurate evaluation methods.
Purpose of the Study:
- To derive a new closed-form for Interference Signal Power Attenuation (ISPA).
- To evaluate interference from Orthogonal Frequency Division Multiplexing (OFDM)-based Long Term Evolution (LTE)-Advanced into Frequency Modulation (FM) broadcasting.
- To develop a more precise model for estimating power attenuation loss.
Main Methods:
- Mathematical derivation of a closed-form ISPA.
- Computation of ISPA loss due to PSD overlapping between OFDM-based LTE-Advanced and FM broadcasting.
- Comparison with Advanced Minimum Coupling Loss (A-MCL) and approximate-ISPA methods.
Main Results:
- The proposed model estimates power attenuation loss more precisely than A-MCL and approximate-ISPA.
- Numerical results show reduced interference power: 2.8 dB (co-channel) and 5.2 dB (adjacent channel) less than A-MCL.
- Interference power is 1.5 dB (co-channel) and 2.2 dB (adjacent channel) less than approximate-ISPA with null guard band.
Conclusions:
- The new ISPA model offers superior accuracy in interference assessment.
- Reduced interference allows for diminished physical separation between LTE-Advanced and FM systems.
- This supports more efficient utilization of the radio frequency spectrum.
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