Title :
Cochannel interference computation and asymptotic performance analysis in TDMA/FDMA systems with interference adaptive dynamic channel allocation
Author :
Xu, Ziqiang ; Akansu, Ali N. ; Tekinay, Sirin
Author_Institution :
Dept. of Electr. & Comput. Eng., New Jersey Inst. of Technol., Newark, NJ, USA
fDate :
5/1/2000 12:00:00 AM
Abstract :
It has been shown through simulation results that the interference adaptive dynamic channel allocation (IA-DCA) scheme is a promising resource allocation strategy in time/frequency-division multiple-access (TDMA/FDMA) communication systems. The major obstacle in analyzing IA-DCA is the computation of cochannel interference without the constraint of conventional channel reuse factors. To overcome this difficulty, one needs a computationally efficient representation which can approximate the interference distribution accurately. For this purpose, a concept called channel reuse zone (CRZ) is introduced. Based on this new concept, both downlink and uplink cochannel interference are computed with two different propagation models, namely, a simplified deterministic model and a shadowing model. The results are then used to calculate the outage probability of the idealized, interference adaptive maximum parking (IAMP) scheme. Finally, as a significant contribution, an asymptotic performance bound for the two-way IA-DCA strategy is derived
Keywords :
cellular radio; channel allocation; cochannel interference; digital simulation; frequency division multiple access; probability; radio links; radiowave propagation; time division multiple access; TDMA/FDMA; TDMA/FDMA systems; approximate interference distribution; asymptotic performance analysis; asymptotic performance bound; cellular networks; channel reuse factors; channel reuse zone; cochannel interference computation; deterministic model; downlink cochannel interference; frequency-division multiple-access; interference adaptive dynamic channel allocation; interference adaptive maximum parking; outage probability; propagation models; resource allocation; shadowing model; simulation results; time-division multiple-access; two-way IA-DCA strategy; uplink cochannel interference; Channel allocation; Computational modeling; Distributed computing; Frequency division multiaccess; Interchannel interference; Interference constraints; Multiple access interference; Radio spectrum management; Resource management; Time division multiple access;
Journal_Title :
Vehicular Technology, IEEE Transactions on
