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Relaying is expected to play an important role in the design of next generation cellular networks. Integrating multi-hop communications with the infrastructure-based design of cellular networks results in a new wireless architecture known as Multi-hop Based Cellular Network (MBCN). Studies performed so far on MBCNs mainly assume the use of omni-directional antennas at relay stations. In this paper, the authors investigate the use of advanced antenna configurations at fixed relay stations in CDMA-based MBCNs. The considered advanced antenna configurations include directional antennas and various adaptive antenna arrays. A new interference reduction factor is derived and studied in terms of overall system performance.
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