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This paper presents results of wide band channel measurements at 2.53 GHz for a representative urban macro cell environment in Ilmenau, Germany. The extensive channel sounding campaign covered the MIMO radio links from 22 mobile tracks to 3 different base stations and 1 relay station. The results presented in this paper provide insight into the large scale parameter analysis of the power, delay domain,...
The different propagation times due to the distinct distance between the BSs and MSs result in inter-cell asynchronous interference, which severely destroy system performance. How to mitigate inter-cell asynchronous interference by making use of SLNR precoding is the key to this paper. Firstly, a framework of Cooperative Base Station Systems (Co-BS) was developed and the delay between the cells was...
In this paper, we consider a new channel probing scheme for opportunistic scheduling in the uplink of orthogonal frequency division multiplexing (OFDM)-based wireless systems. To reduce signaling overhead for the probing, we consider a two-step channel probing process; called pre-probing and mainprobing. Good subchannels are first estimated through the pre-probing process using a probing signal transmitted...
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