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OFDMA femtocells are generally accepted as a very promising solution for indoor coverage with high data rate. However, the lack of systematic schemes to effectively mitigate macro/femtocell hierarchical interference, fully utilize radio resources, provide quality-of-service (QoS) and fairness guarantee among users suffocate the performance realization of femtocells. In this paper, an Adapted Soft...
In order to control the interference, and improve the spectral efficiency in the Femtocell and Macrocell Overlaid System (FMOS), the FMOS model is built and Combination of Frequency bandwidth dynamic division and Clustering Algorithm (CFCA) is proposed for Orthogonal Frequency Division Multiple Access (OFDMA) FMOS. In CFCA, the optimal clustering problem in terms of interference mitigation is constructed...
For the evolved UTRA (EUTRA), cell edge bit-rate and system throughput become important criteria for the evaluation of the system proposals and requirements on the system performance. Inter-cell interference is the main source of performance degradation for OFDM, especially the data rate of cell edge UEs is severely limited. Many inter-cell interference mitigation schemes are proposed to improve the...
Since 3G long term evolution (LTE) is launched by 3GPP recently, many multiple access (MA) schemes have been proposed for 3G LTE, such as multi-carrier (MC) - WCDMA, MC-time duplex-synchronized CDMA (MC-TD-SCDMA), orthogonal frequency division multiple access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), which includes IFDMA (interleaved FDMA) and DFT-S OFDM (DFT-spreading...
The inter-cell interference of orthogonal frequency division multiple access (OFDMA) based multi-cell distributed network architecture is analyzed. Based on generalized distributed cellular architecture-group cell, the interference condition without power control and with power control is analyzed respectively, and the system outage probability compared to traditional cellular structure is evaluated...
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