LTE-A超远覆盖中的随机接入前导码设计与性能

doi:10.3969/j.issn.1001-2400.2013.05.007

Abstract

Abstract:

Aiming at the uplink out-of-synchronization problem due to the long distance and the high delay between the eNodeB and the UE, a random access preamble structure is presented for the long term evolution-advanced(LTE-A) super coverage. The random access preamble structure is a new preamble sequence constructed by two different cascading Zadoff-Chu root sequences followed by the expanded cyclic prefix and guard time. Furthermore, the period auto-correlation and cross-correlation of the proposed preamble is derived and the coverage performance is analyzed. Theoretical analysis and simulation results show that the auto-correlation of the proposed preamble reaches its peak only when the delay is zero, and the coverage range is greatly improved by using the proposed preamble.

Key words: long term evolution-advanced, super long-range coverage, random access, Zadoff-Chu sequence

CLC Number:

TN929.5

LI Xiaohui;WEI Longfei;HEI Yongqiang;LIU Naian. Design and performance of the random access preamble structure for LTE-A super long-range coverage[J].J4, 2013, 40(5): 38-43+156.

References

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Design and performance of the random access preamble structure for LTE-A super long-range coverage

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