GSM versus CDMA: performance comparisons

Muratore, F.; Romano, Gianmarco

doi:10.1109/glocom.1996.594417

Cited by 1 publication

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Network parameters under considerations are: SU cell location relative to the primary cell, primary channel occupancy, and level of channel fading. Table I shows a list of key GSM parameters used in the simulation, following [20]. The PU-UE has a peak transmit power of 30 dBm, whereas the SU-UE power limit is set to 27 dBm when applicable.…”

Section: Channel Capacity Resultsmentioning

confidence: 99%

Channel capacity of a cognitive radio network in GSM uplink band

Gao

Suraweera

Shafi³

et al. 2007

2007 International Symposium on Communications and Information Technologies

View full text Add to dashboard Cite

Cognitive radio technology enables the reuse of locally vacant frequency bands for better spectrum utilization and improved overall bandwidth efficiency. In this paper we analyze the practical capacity limits achievable by the (unlicensed) secondary users (SU) sharing bandwidth with (licensed) primary users in 850 MHz GSM uplink frequency band. The achievable capacity limits per user are compared under different constraints and interference scenarios. In order to minimize the impact on PU, we limit the instantaneous interference power from SU to PU in all cases of the investigation. The results show that the additional limit on the SU transmit power to 27 dBm results in a 10% drop in channel capacity, whereas treating PU interference as additive Gaussian noise results in a 50% capacity drop. The effects on the capacity by PU channel occupancy, location of secondary user cell, and log-normal fading spread are also studied. Results show that the average channel capacity is rather insensitive to secondary cell locations. A significant capacity gain can be achieved when PU channel occupancy drops from 50% to 10% or the standard deviation of log normal fading decreases from 8 to 4 dB.

show abstract

Section: Channel Capacity Resultsmentioning

confidence: 99%