Diversity Gain Region of Nakagami-m Faded Z-Channel

The interfering source in a two-user Z-channel can use either single-user (SU) codes or rate splitting (RS)-based multiuser codes. The RS codes are known to achieve better sum-rate than the SU codes. However, if the individual user’s reliability requirements are considered in a two-user Z-channel, it is unknown whether the RS codes achieve better performance than SU codes. To this end, the diversity gain region (DGR), which characterizes the diversity order tradeoff between the two users, is characterized for the Nakagami-m faded Z-channel. The DGRs for the RS codes under different operating modes such as altruistic and selfish modes are derived. The RS codes can operate in the altruistic mode for a large range of multiplexing gains compared to that of the SU codes. On the other hand, in the selfish mode, the SU codes achieve better DGR than the RS codes. Moreover, orthogonalization is shown to perform better than SU and RS codes-based interference-limited Z-channel for an only limited multiplexing gain region.

[1]  Mohammed Nafie,et al.  On the diversity gain region of the Z-interference channels , 2012, 2012 IEEE International Conference on Communications (ICC).

[2]  Erik Haas,et al.  Aeronautical channel modeling , 2002, IEEE Trans. Veh. Technol..

[3]  Mikael Skoglund,et al.  On the DMT-Optimality of Nondynamic DF Relaying in Asymmetric Nakagami Fading Channels , 2010, IEEE Transactions on Information Theory.

[4]  A. Bayesteh,et al.  Diversity-Multiplexing Trade-off in Z-channel , 2007, 2007 10th Canadian Workshop on Information Theory (CWIT).

[5]  A. S. Madhukumar,et al.  Relay-assisted interference cancellation for cognitive aeronautical communication systems , 2016, 2016 Integrated Communications Navigation and Surveillance (ICNS).

[6]  Kamran Arshad,et al.  Interference Management in Femtocells , 2013, IEEE Communications Surveys & Tutorials.

[7]  Hua Wang,et al.  Gaussian Interference Channel Capacity to Within One Bit , 2007, IEEE Transactions on Information Theory.

[8]  A. S. Madhukumar,et al.  Performance analysis of Z-channel with relay under Rayleigh fading and discrete constellations , 2012, 2012 IEEE Wireless Communications and Networking Conference (WCNC).

[9]  Andrea J. Goldsmith,et al.  The "Z" channel , 2003, GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489).

[10]  Te Sun Han,et al.  A new achievable rate region for the interference channel , 1981, IEEE Trans. Inf. Theory.

[11]  Hamid Jafarkhani,et al.  The Diversity Multiplexing Tradeoff for Interference Networks , 2018, WSA.

[12]  Lizhong Zheng,et al.  Diversity and multiplexing: a fundamental tradeoff in multiple-antenna channels , 2003, IEEE Trans. Inf. Theory.

[13]  Aydano B. Carleial,et al.  A case where interference does not reduce capacity (Corresp.) , 1975, IEEE Trans. Inf. Theory.