Turbo-Equalization for Single-Carrier Transmission over MIMO Broadband Wireless Channel: Performance/complexity trade-offs
نویسندگان
چکیده
This paper addresses the issue of advanced equalization methods for space-time communications over MIMO broadband wireless channel. Instead of resorting to conventional multiuser detection techniques (based on the straightforward analogy between antennas and users), we adopt a different point of view and separate time equalization from space equalization, thus introducing a higher degree of freedom in the overall spacetime equalizer design. The linear part of the equalizer is derived in both time and frequency domains.
منابع مشابه
Single-Carrier Frequency-Domain Equalization for Orthogonal STBC over Frequency-Selective MIMO-PLC channels
In this paper we propose a new space diversity scheme for broadband PLC systems using orthogonal space-time block coding (OSTBC) transmission combined with single-carrier frequency-domain equalization (SC-FDE). To apply this diversity technique to PLC channels, we first propose a new technique for combining SC-FDE with OSTBCs applicable to all dispersive multipath channels impaired by impulsive...
متن کاملReduced-complexity space-time turbo-equalization for frequency-selective MIMO channels
We consider turbo equalization of space–time-coded transmission over frequency-selective fading multiple-input–multiple-output (MIMO) channels. A MIMO finite-impulse-response prefilter is proposed and shown to reduce the turbo equalizer complexity significantly at a small performance loss. Advantages of the proposed scheme are that we do not alter the equalization algorithm or require the chann...
متن کامل“Turbo Transceivers for MIMO Wireless Communications”
Abstract The discovery of the Turbo codes has driven research on the creation of new signal detection concepts that can, in general, be referred to as the Turbo approach. Recently, this approach has made a drastic change in creating signal detection techniques and algorithms such as equalization of inter-symbol interference (ISI) experienced by broadband single carrier signaling over mobile rad...
متن کاملAdvanced Hybrid-ARQ Receivers for Broadband MIMO Communications
Multiple input multiple output (MIMO) and hybrid–automatic repeat request (ARQ) mechanisms play a key role in the evolution of current wireless communications systems towards high data rate wireless packet access. In MIMO techniques, the spatial dimension of the MIMO channel is exploited through the use of multiple antennas at both the transmitter and receiver sides. This translates into an imp...
متن کاملWireless broadband single-carrier systems with MMSE turbo equalization receivers
Broadband single-carrier modulated signals experience severe multipath distortion when propagating through the physical medium. Correcting the distortion with channel equalization is the foremost task of the detector. Prior information about the transmitted signals in the form of channel decoder feedback can significantly enhance equalization accuracy. An algorithm that iteratively performs cha...
متن کامل