Performance Analysis of Time Division Broadcast Protocol with Incremental Relaying
This paper investigates two-way relaying with direct link transmission. We propose to combine incremental relaying (IR) with the time division broadcast protocol (TDBC) to form a new scheme, termed TDBC-IR, to increase the spectral efficiency of TDBC. Assuming half-duplex decode-and-forward relaying, the performance of three protocols, TDBC, TDBC-IR, and physical-layer network coding (PNC), are studied and compared, in terms of outage probability, expected rate (ER), and diversitymultiplexing tradeoff (DMT). It is found that 1)TDBC-IR has the same outage performance as that of TDBC and better than PNC; 2) the ER of TDBC-IR is greater than TDBC and PNC in the whole signal-to-noise ratio region, i.e., TDBC-IR has improved spectral efficiency performance; 3) the maximum achievable diversity order of TDBC-IR and TDBC are both two whereas that of PNC is one; 4) the maximum achievable multiplexing gain of TDBC-IR is one, which is better than TDBC (its maximum achievable is 2/3) and achieves the maximum of PNC (its maximum achievable is one). Since multiplexing gain reflects spectral efficiency, the DMT analysis confirms the spectral efficiency advantage of TDBC-IR over TDBC.
two-way relaying time division broadcast protocol incremental relaying
Kun Xu Yuanyuan Gao Xiaoxin Yi
Institute of Communications Engineering, PLA University of Science and Technology 210007, Nanjing Ch Institute of Communications Engineering, PLA University of Science and Technology210007, Nanjing Chi
国际会议
南京
英文
1-5
2011-11-09（万方平台首次上网日期，不代表论文的发表时间）