TY - GEN

T1 - On the sum capacity of Poisson Z-interference channels

AU - Lai, Lifeng

AU - Liang, Yingbin

AU - Shitz, Shlomo Shamai

PY - 2013

Y1 - 2013

N2 - In this paper, the sum capacity of the Poisson Z-interference channel that models optical communication systems with multiple transceivers is investigated. First, the capacity region of the Poisson Z-interference channel is shown to remain the same if we approximate the Poisson Z-interference channel with a discrete time memoryless binary input binary output Z-interference channel. Second, building on this result, the sum capacity of the Poisson Z-interference channel when the cross link coefficient is either sufficiently small or sufficiently large is characterized. When the cross link coefficient is sufficiently small, the sum capacity is achieved by treating interfering signal (if any) as noise. However, unlike the Gaussian Z-interference channel, the user not experiencing the interference does not necessarily transmit at its largest possible rate to achieve the sum capacity. When the cross link coefficient is sufficiently large, the sum capacity is achieved by letting the user experiencing the interference decode both messages.

AB - In this paper, the sum capacity of the Poisson Z-interference channel that models optical communication systems with multiple transceivers is investigated. First, the capacity region of the Poisson Z-interference channel is shown to remain the same if we approximate the Poisson Z-interference channel with a discrete time memoryless binary input binary output Z-interference channel. Second, building on this result, the sum capacity of the Poisson Z-interference channel when the cross link coefficient is either sufficiently small or sufficiently large is characterized. When the cross link coefficient is sufficiently small, the sum capacity is achieved by treating interfering signal (if any) as noise. However, unlike the Gaussian Z-interference channel, the user not experiencing the interference does not necessarily transmit at its largest possible rate to achieve the sum capacity. When the cross link coefficient is sufficiently large, the sum capacity is achieved by letting the user experiencing the interference decode both messages.

UR - http://www.scopus.com/inward/record.url?scp=84893235755&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84893235755&partnerID=8YFLogxK

U2 - 10.1109/ICCChina.2013.6671184

DO - 10.1109/ICCChina.2013.6671184

M3 - Conference contribution

AN - SCOPUS:84893235755

SN - 9781479910335

T3 - 2013 IEEE/CIC International Conference on Communications in China, ICCC 2013

SP - 600

EP - 604

BT - 2013 IEEE/CIC International Conference on Communications in China, ICCC 2013

T2 - 2013 IEEE/CIC International Conference on Communications in China, ICCC 2013

Y2 - 12 August 2013 through 14 August 2013

ER -