Yang, Y and Yum, TSP (2005) Analysis of Power Ramping Schemes for UTRA-FDD Random Access Channel. IEEE Transactions on Wireless Communications , 4 (6) 2688 - 2693. 10.1109/TWC.2005.857993.
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Abstract
The Random Access Channel (RACH) in Universal Terrestrial Radio Access – Frequency Division Duplex (UTRA-FDD) system is a contention-based channel mainly used to carry control information from mobile stations to base stations. The transmission of a random access request contains two steps: Preamble Transmission and Message Transmission. In preamble transmission, power ramping technique is used to favor the delayed preambles by stepping up the transmission power after each unsuccessful access. In doing so, the success of transmitting a long-delayed preamble is increased due to the power capture effect. In this letter, we analyze the blocking, throughput and delay performance of preamble transmission under three power ramping schemes with fixed, linear and geometric step sizes. The interference caused by different power ramping schemes are also compared.
| Type: | Article |
|---|---|
| Title: | Analysis of Power Ramping Schemes for UTRA-FDD Random Access Channel |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/TWC.2005.857993 |
| Keywords: | Power Ramping, UTRA-FDD, Random Access Channel (RACH), Third-Generation (3G) Wireless Communications. |
| UCL classification: | UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering |
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