Outage analysis of cognitive Z-interference channel with two-path cognitive relaying

Faheem A. Khan, T. Ratnarajah, Shankar Prakriya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In this paper, we analyze the outage performance of cognitive Z-interference channel where two-path cognitive relaying is used to improve bandwidth utilization efficiency of cognitive user transmission while simultaneously leading to improvement in outage performance of primary user. Cognitive relays have non-causal message knowledge of cognitive user and use interference pre-cancellation scheme to cancel interference due to cognitive transmission at primary receiver. We derive analytical results for outage probability and diversity-multiplexing tradeoff to prove the efficiency of proposed protocol. Simulations results demonstrate that the proposed protocol achieves large outage capacity, ergodic capacity and diversity gain for primary user while achieving improved outage capacity for cognitive user.

Original languageEnglish
Title of host publicationProceedings - 2010 2nd UK-India-IDRC International Workshop on Cognitive Wireless Systems, UKIWCWS 2010
DOIs
Publication statusPublished - 3 Mar 2011
Externally publishedYes
Event2nd UK-India-IDRC International Workshop on Cognitive Wireless Systems - New Delhi, India
Duration: 13 Dec 201014 Dec 2010
Conference number: 2

Conference

Conference2nd UK-India-IDRC International Workshop on Cognitive Wireless Systems
Abbreviated titleUKIWCWS 2010
CountryIndia
CityNew Delhi
Period13/12/1014/12/10

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