CRS interference cancellation algorithm for heterogeneous network

Hua Luo
,
W. Li
,
Yue Zhang
,
Li-Ke Huang
,
John Cosmas
,
Q. Ni

Research Output: Contribution to journal Article Peer-review

Sustainable Development Goals

SDG 9 Industry, Innovation, and Infrastructure

Abstract

Heterogeneous network is introduced to improve the network capacity in LTE Release 9 and system beyond. The potential traffic congestion due to increased users can be alleviated by the cooperation between macro-cell and pico-cell. However, the inter-cell interference caused by RF signal from macro-cell will reduce the performance severely. Enhanced inter-cell interference coordination is proposed in Rel. 10 to solve this problem using almost blank subframe (ABS). Yet, the cell specific reference signal in ABS can still cause interference to the data resource element (RE) from the pico-cell inevitably for noncolliding scenario. In this Letter, a novel interference cancellation (IC) algorithm is proposed to mitigate the interference. First, the timing and carrier frequency offset of interference signal is estimated and compensated. Second, the interfering channel response is estimated by utilising the channel statistics. Third, the interference signal is reconstructed based on the channel estimation and cancelled in the received signal in time domain. The experiment results show that the performance of proposed IC algorithm is robust.

Publication Information

Output type

Research Output: Contribution to journal Article Peer-review

Original language

English

Pages from-to (Number of pages)

Pages 77-79

Journal (Volume, Issue Number)

Electronics Letters (Volume 52, Issue 1)

Publication milestones

Published - 11/01/2016

Publication status

Published - 11/01/2016

ISSN

0013-5194

External Publication IDs

handle.net: 10547/624502
Scopus: 84954138502

Access to documents

10.1049/el.2015.2669

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