On the capacity of a class of cognitive Z-interference channels

Jinhua Jiang, Ivana Marić, Andrea Goldsmith, Shamay (Shitz) Shlomo, Shuguang Cui

פרסום מחקרי: פרק בספר / בדוח / בכנספרסום בספר כנסביקורת עמיתים

תקציר

We study a special class of the cognitive radio channel in which the receiver of the cognitive pair does not suffer interference from the primary user. Previously developed general encoding schemes for this channel are complex as they attempt to cope with arbitrary channel conditions, which leads to rate regions that are difficult to evaluate. The focus of our work is to derive simple rate regions that are easily computable, thereby providing more insights into achievable rates and good coding strategies under different channel conditions. We first present several explicit achievable regions for the general discrete memoryless case. We also present an improved outer bound on the capacity region for the case of high interference. We then extend these regions to Gaussian channels. With a simple outer bound we establish a new capacity region in the high-interference regime. Lastly, we provide numerical comparisons between the derived achievable rate regions and the outer bounds.

שפה מקוריתאנגלית
כותר פרסום המארח2011 IEEE International Conference on Communications, ICC 2011
מזהי עצם דיגיטלי (DOIs)
סטטוס פרסוםפורסם - 2011
אירוע2011 IEEE International Conference on Communications, ICC 2011 - Kyoto, יפן
משך הזמן: 5 יוני 20119 יוני 2011

סדרות פרסומים

שםIEEE International Conference on Communications

כנס

כנס2011 IEEE International Conference on Communications, ICC 2011
מדינה/אזוריפן
עירKyoto
תקופה5/06/119/06/11

ASJC Scopus subject areas

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  • ???subjectarea.asjc.2200.2208???

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