A Novel Receiver Design for Single-Carrier Frequency Domain Equalization in Broadband Wireless Networks with Amplify-and-Forward Relaying

作者：Eghbali Homa; Muhaidat Sami^*; Al Dhahir Naofal

来源：IEEE Transactions on Wireless Communications, 2011, 10(3): 721-727.

DOI：10.1109/TWC.2010.011111.100088

• Single-carrier frequency domain equalization
• cooperative diversity
• distributed space-time block coding(STBC)
• equalization
• fading channels
• pairwise error probability

In this paper, we propose an efficient receiver design for single carrier frequency-domain equalization (SC-FDE) for relay-assisted transmission scenario over frequency selective channels. Building upon our earlier work, we propose a novel minimum mean square error (MMSE)-based receiver design tailored to broadband cooperative networks. We show that, by incorporating linear processing techniques, our MMSE-based receiver is able to collect full antenna and multipath diversity gains, while maintaining low complexity implementation. Specifically, under the assumption of perfect power control and high signal-to-noise ratio (SNR) for the underlying links and assuming either of source-to-relay (S -> R) or relay-to-destination (R -> D) links to be frequency selective Rician fading, our performance analysis demonstrates that the proposed receiver is able to achieve a maximum diversity order of min(L-SR, L-RD) + L-SD + 2 where L-SR, L-RD, and L-SD are the channel memory lengths for S -> R, R -> D and source-to-destination (S -> D) links, respectively. Simulation results demonstrate that our proposed receiver outperforms the conventional cooperative MMSE-SC-FDE receiver by performing close to the matched filter bound (MFB).

• 出版日期2011-3