October 2012
Intermediate to advanced
248 pages
7h 54m
English
Content preview from LTE Advanced: 3GPP Solution for IMT-Advanced
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5.7 Conclusions
In this chapter, we have covered the LTE uplink carrier aggregation principles as defined in 3GPP Release 10 specifications. The use of uplink carrier aggregation allows having higher uplink peak rates compared to Release 8 and reaching 100 Mbps in the uplink with single uplink transmit antenna and without having to use 64QAM modulation. Together with Release 10 uplink carrier aggregation there are extensions also for the single carrier uplink operation as the resource allocation in the uplink is now more flexible. The Release 10 specifications enable simultaneous use of two PUSCH allocations or alternative simultaneous PUSCH and PUCCH allocation with non-contiguous uplink resource allocation. The uplink carrier aggregation support is completed in Release 11 with the support of multiple uplink timing advance values to ensure operation with band specific repeater scenarios.
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