A Statistical Inter-Cell Interference Model for Downlink Cellular OFDMA Networks Under Log-Normal Shadowing and Multipath Rayleigh Fading

作者：Seol Changkyu^*; Cheun Kyungwhoon

来源：IEEE Transactions on Communications, 2009, 57(10): 3069-3077.

DOI：10.1109/TCOMM.2009.10.080152

• Multiple access interference
• orthogonal frequency division multiplexing (OFDM)
• orthogonal frequency division multiple access (OFDMA)
• soft decision decoding

The probability density pdf) of the inter-cell interference for downlink cellular orthogonal frequency division multiple access networks under log-normal shadowing and multipath Rayleigh fading is derived. The derived pdf is observed to highly deviate from the Gaussian distribution, especially at moderate to small network loads. Based on the derived inter-cell interference statistics, the decoder performance can be significantly improved compared to the case when the traditional decoder optimized for the AWGN channel is employed. A simple suboptimum decoding algorithm that closely approximates the derived optimum decoder performance is also proposed.

• 出版日期2009-10