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They model the spectrum-sharing process as a spectrum market where primary users offer secondary users their subchannels with limiting the interference from secondary users.
The length of t s is chosen to maximize the channel utilization [3], sensing efficiency [10] or system throughput [14], while limiting the interference to PU.
Their use reduces the amount of guard symbols needed between preamble and payload part to a minimum while limiting the interference from the payload part.
In this paper, specifying the single secondary user (SU) with multiple primary user (PU) case, a novel power allocation scheme is developed for orthogonal frequency division multiplexing (OFDM) – based cognitive radio networks designed to maximize the capacity of the SU while limiting the interference to the PUs.
This can be attributed to the down-prioritization of the FUs and the fact that the femtocell resource allocation strategy focuses on limiting the interference to the MUs and not on the optimization of the overall spectral efficiency.The proposed JPC scheme outperforms both reference solutions and achieves large gains over them.
We now discuss the case when N>1 so that user selection is applied for users in set B. It is clear from (1) that the SNR of user n ∈ B can be maximized by limiting the interference term I n.
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To observe objects in the cosmos that radiate in the infrared and millimetre-wavelength regions of the spectrum, astronomers need telescopes and detectors that are cold enough to limit the interference generated by the instruments' own heat (see infrared astronomy).
To achieve that I felt it important that we limit the interference as much as possible.
The basic idea is to limit the interference to only hops, where is a positive integer.
The FA is a crucial function that limits the interference between the CR devices and PUs operating in a heterogeneous and dynamic radio environment.
This information is employed to exploit the spatial resources more efficiently and limit the interference to the primary users to an admissible level.
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