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This paper discusses the improvements that uplink MIMO brings to Mobile WiMAX network deployments and introduces a new technique based on uplink MIMO, tile switched diversity (TSD). Uplink MIMO (UL-MIMO) provides extended coverage (up to 41 percent cell radius increase), and can also be used to reduce power consumption (to 750 mW power savings) and greatly ease design constraints for high output power CPEs. Maximum performance is obtained when UL-MIMO is implemented both at the mobile station and the base station, but this analysis shows that significant gains can be achieved with UL-MIMO implemented at the mobile station only.

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Format:PDFSize:808 KB
Date:Jun 2008
Pages:19

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