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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Sung-Hyuk Shin Chang-Soo Koo Grieco, D. Zeira, A. |
| Copyright Year | 2003 |
| Description | Author affiliation: InterDigital Commun. Corp., Melville, NY, USA (Sung-Hyuk Shin; Chang-Soo Koo; Grieco, D.; Zeira, A.) |
| Abstract | In 3G UTRA TDD, closed loop power control is used as an inner loop power control technique for downlink DPCHs (dedicated physical channels) in the 3.84 Mcps option, and both uplink and downlink DPCHs in the 1.28 Mcps option. In the current closed loop power control, transmit power is generally updated at the frame sub-frame rate, using a semi-static step size (1,2, or 3 dB). Such a slow transmit power update by a given step size may not be enough to cope with dynamically changing environments, so that the performance of the closed loop power control is degraded. In this paper, we propose an enhanced closed loop power control technique for UTRA TDD, which adapts the step size according to relative pathloss (or power) measurements at the transmitter side. We show that the link-level performance of the proposed power control can be significantly better than the existing closed loop power control. The largest gains are obtained for slow and moderate fading channels. |
| Starting Page | 2226 |
| Ending Page | 2230 |
| File Size | 334910 |
| Page Count | 5 |
| File Format | |
| ISBN | 0780377575 |
| ISSN | 10903038 |
| DOI | 10.1109/VETECS.2003.1208784 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-04-22 |
| Publisher Place | South Korea |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Power control Downlink Power measurement Fading Frequency Interference Size measurement Radio transmitters Hybrid power systems 3G mobile communication |
| Content Type | Text |
| Resource Type | Article |
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