This paper presents a spatial channel model for IMT-2000 systems as well as measurement results for 1.2MHZ wide wireless channels using an eight element linear array at two different frequencies. The spatial channel model is a spatial extension of the commonly known IMT-2000 temporal (i.e.,delay profile) model. The measurement results are used to characterize the spatial aspects of the wireless channel and are used to verify the model.
In this paper, we investigate the performance of open access and closed access femtocell (HeNB) in the presence of a co-channel interference (CCI) from a nearby microcell base station (eNB). The analysis is presented for a downlink (DL) Long term Evolution (LTE) channel model in a heterogeneous network where there is no co-operation involved between eNB and HeNB. We further consider that the primary common pilot symbol (P-CPICH) is at least 20hdB higher at the user equipment (UE) to which it is connected so as to differentiate the useful signal from the interference. Our performance study indicates that a significant variation in bit error rate (BER) is observed when HeNB transmit power is varied and approximately 4dB gain in SNR is achievable when the eNB MUE link distance reduces from 700m to 500m.
Index Terms-Downlink (DL), Long Term Evolution (LTE),evolved node B (eNB), Home evolved node B (HeNB), primary common pilot symbol (P-CPICH), Co-channel interference (CCI), Multi input multi output (MIMO), channel capacity, Signal to interference noise ratio (SINR).
In this paper we focus on analyzing the performance of spatial channel separation method to mitigate the interference experienced by the macro user equipment (MUE) trapped inside a closed access femtocell for a Long Term Evolution (LTE) system. This is implemented by un-correlating the MIMO (Multi Input Multi Output) channels between each transmitter-receiver pair so that the transmissions of eND (evolved Node D) -MUE
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