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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Li Zhang Peng Chen Skov, P. |
| Copyright Year | 2011 |
| Abstract | Carrier aggregation (CA) is introduced in Long Term Evolution-Advanced (LTE-A) to provide larger bandwidth and higher peak rate for a single user. L1 control signaling design is very critical for implementing CA, and Ack/Nack feedback for CA is particularly challenging in time division duplexing (TDD) mode due to the potential large UL/DL asymmetry and limited transmit power in UL. This paper addresses some key issues for Ack/Nack feedback in TDD CA, namely the Ack/Nack bundling schemes, the number of feedback bits to be supported, and the discontinuous transmission (DTX) state feedback. For the last issue, the concept of bundled DTX feedback is proposed. The impacts of different feedback options on DL throughput are evaluated through simple theoretical analysis and extensive system level simulations, and some design principles are proposed, which can be used as guidance for concrete L1 design. |
| Starting Page | 1 |
| Ending Page | 6 |
| File Size | 254418 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781612842325 |
| ISSN | 15503607 |
| e-ISBN | 9781612842332 |
| e-ISBN | 9781612842318 |
| DOI | 10.1109/icc.2011.5963064 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2011-06-05 |
| Publisher Place | Japan |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Throughput Decoding Correlation Data communication Propagation losses Encoding Analytical models |
| Content Type | Text |
| Resource Type | Article |
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