On Limits of Wireless Communications in a Fading Environment when UsingMultiple Antennas
Wireless Personal Communications: An International Journal
Minimum mean squared error equalization using a priori information
IEEE Transactions on Signal Processing
Turbo-BLAST for wireless communications: theory and experiments
IEEE Transactions on Signal Processing
The capacity of low-density parity-check codes under message-passing decoding
IEEE Transactions on Information Theory
Analyzing the turbo decoder using the Gaussian approximation
IEEE Transactions on Information Theory
Iterative multiuser joint decoding: unified framework and asymptotic analysis
IEEE Transactions on Information Theory
A comparison of the HIPERLAN/2 and IEEE 802.11a wireless LAN standards
IEEE Communications Magazine
Turbo equalization: adaptive equalization and channel decoding jointly optimized
IEEE Journal on Selected Areas in Communications
Analysis and performance of some basic space-time architectures
IEEE Journal on Selected Areas in Communications
Superposition coded modulation and iterative linear MMSE detection
IEEE Journal on Selected Areas in Communications - Special issue on capaciyy approaching codes
Distribution of L-values in gray-mapped M2-QAM: closed-form approximations and applications
IEEE Transactions on Communications
Semi-analytical performance prediction methods for iterative MMSE-IC multiuser MIMO joint decoding
IEEE Transactions on Communications
| Hi-index | 0.00 |
Turbo receivers reduce the effect of the interference-limited propagation channels through the iterative exchange of information between the front-end receiver and the channel decoder. Such an iterative (turbo) process is diffcult to describe in a closed form so the performance evaluation is often done by means of extensive numerical simulations. Analytical methods for performance evaluation have also been proposed in the literature, based on Gaussian approximation of the output of the linear signal combiner. In this paper, we propose to use mutual information to parameterize the logarithmic-likelihood ratios (LLRs) at the input/output of the decoder, casting our approach into the framework of extrinsic information transfer (EXIT) analysis. We find the EXIT functions of the front-end (FE) receiver analytically, that is, using solely the information about the channel state. This is done, decomposing the FE receiver into elementary blocks described independently. Our method gives an insight into the principle of functioning of the linear turbo receivers, allows for an accurate calculation of the expected bit error rate in each iteration, and is more flexible than the one previously used in the literature, allowing us to analyze the performance for various FE structures. We compare the proposed analytical method with the results of simulated data transmission in case of multiple antennas transceivers.