Achievable Rate of Multi-user Gaussian Z Interference Channel

doi:10.13190/j.jbupt.2016-155

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2017, Vol. 40 ›› Issue (5): 110-116.doi: 10.13190/j.jbupt.2016-155

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Achievable Rate of Multi-user Gaussian Z Interference Channel

TONG Yan-chun¹, ZHANG Bo^1,2, YUAN Wen-fang²

1. Zhoukou Normal University, Henan Zhoukou 460001, China;
2. Henan Mechanical and Electrical Vocational College, Zhengzhou 451191, China

Received:2016-09-16 Online:2017-10-28 Published:2017-11-21

Abstract

Abstract: In order to further study the communication scheme of Han-Kobayashi (HK) on cascade Gaussian Z interference channel, a method of one inner bound and two outer bounds was proposed under weak and medium interference. In the scheme, as the transmitted information of both users split into common information and private information, a achieve rate R_HK is obtained by optimizing the ratio between common and private information. An inner bound is proposed by adding a constraint on this channel which is less than R_HK. Based on two genie-aided programs of two-user interference channel, two outer bounds were proposed by genie-aided which great than R_HK. By analyzing the distance between the inner bound and outer bounds, HK type scheme can be achieved within a single bit per second per hertz (bit·s^-1·Hz^-1) of the capacity under medium interference and approach to a single bit per second per hertz (bit·s^-1·Hz^-1) of the capacity under weak interference as total number increasing.

Key words: communication scheme, rate-splitting, Gaussian interference channel, channel capacity, genie-aided

CLC Number:

TN911.22

TONG Yan-chun, ZHANG Bo, YUAN Wen-fang. Achievable Rate of Multi-user Gaussian Z Interference Channel[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2017, 40(5): 110-116.

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Achievable Rate of Multi-user Gaussian Z Interference Channel

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