K-user degraded broadcast channel with secrecy outside a bounded range

Shaofeng Zou, Yingbin Liang, Lifeng Lai, H. Vincent Poor, Shlomo Shamai

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

תקציר

A K-receiver degraded broadcast channel with secrecy outside a bounded range is studied, in which a transmitter sends K messages respectively to K receivers, and the channel quality gradually degrades from receiver K to receiver 1. Each receiver k is required to decode messages W1, Wk, for 1 ≤ k ≤ K. Furthermore, each message Wk should be kept secure from receivers with two-level worse channel quality, i.e., receivers 1,., k-2. The secrecy capacity region is fully characterized. The achievable scheme designates one superposition layer to each message with random binning employed for each layer for protecting all upper-layer messages from lower-layer receivers. Furthermore, the scheme allows adjacent layers to share rates so that part of the rate of each message can potentially be shared with its immediate upper-layer message to enlarge the rate region. More importantly, an induction approach is developed to perform Fourier-Motzkin elimination over 2K variables among Θ(K2) bounds to obtain a close-form achievable rate region. A converse proof is developed that matches the achievable rate region, which involves recursive construction of the rate bounds.

שפה מקוריתאנגלית
כותר פרסום המארח2016 IEEE Information Theory Workshop, ITW 2016
עמודים31-35
מספר עמודים5
מסת"ב (אלקטרוני)9781509010905
מזהי עצם דיגיטלי (DOIs)
סטטוס פרסוםפורסם - 21 אוק׳ 2016
אירוע2016 IEEE Information Theory Workshop, ITW 2016 - Cambridge, בריטניה
משך הזמן: 11 ספט׳ 201614 ספט׳ 2016

סדרות פרסומים

שם2016 IEEE Information Theory Workshop, ITW 2016

כנס

כנס2016 IEEE Information Theory Workshop, ITW 2016
מדינה/אזורבריטניה
עירCambridge
תקופה11/09/1614/09/16

ASJC Scopus subject areas

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