Cooperative Transmission with a Slotted Incremental Decode-and-Forward Protocol

We investigate a slotted incremental decode-and-forward (SIDF) protocol for cooperative communication in wireless networks. In the proposed scheme, each user allocates only a portion of its time-resource to incrementally relay its partner's information, thus to improve the bandwidth efficiency of the cooperative transmission. To analyze the performance, we derive the diversity-multiplexing tradeoff (DMT) of the SIDF protocol and show the optimal time-allocation. It is shown that the SIDF achieves the DMT upper bound for low and high multiplexing gain regions whereas it is slightly away from the upper bound at a medium multiplexing gain region. The superiority of the DMT of SIDF protocol is translated into significant improved outage probability, as compared with other well-known user-cooperation protocols.

[1]  Thomas M. Cover,et al.  Elements of Information Theory , 2005 .

[2]  Elza Erkip,et al.  User cooperation diversity. Part I. System description , 2003, IEEE Trans. Commun..

[3]  Philip Schniter,et al.  On the achievable diversity-multiplexing tradeoff in half-duplex cooperative channels , 2005, IEEE Transactions on Information Theory.

[4]  Abbas El Gamal,et al.  Capacity theorems for the relay channel , 1979, IEEE Trans. Inf. Theory.

[5]  Patrick Mitran,et al.  Variable-Rate Two-Phase Collaborative Communication Protocols for Wireless Networks , 2006, IEEE Transactions on Information Theory.

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

[7]  Gregory W. Wornell,et al.  Cooperative diversity in wireless networks: Efficient protocols and outage behavior , 2004, IEEE Transactions on Information Theory.

[8]  Erik G. Larsson,et al.  Cooperative transmission based on decode-and-forward relaying with partial repetition coding , 2009, IEEE Transactions on Wireless Communications.

[9]  Erik G. Larsson,et al.  Cooperative transmit diversity based on superposition modulation , 2005, IEEE Communications Letters.

[10]  Andrea Goldsmith,et al.  Wireless Communications , 2005, 2021 15th International Conference on Advanced Technologies, Systems and Services in Telecommunications (TELSIKS).

[11]  Zhiguo Ding,et al.  Cooperative Multiple Access Systems Using Superposition Modulation , 2006, 2006 IEEE Information Theory Workshop - ITW '06 Chengdu.