TTCM assisted genetic-algorithm aided reduced-complexity multiuser detection

Performance of Some Metaheuristic Algorithms for Multiuser Detection in TTCM-Assisted Rank-Deficient SDMA-OFDM System

We propose two novel and computationally efficient metaheuristic algorithms based on Artificial Bee Colony (ABC) and Particle Swarm Optimization (PSO) principles for Multiuser Detection (MUD) in Turbo Trellis Coded modulation(TTCM-) based Space Division Multiple Access (SDMA) Orthogonal Frequency Division Multiplexing (OFDM) system. Unlike gradient descent methods, both ABC and PSO methods ensu...

Study of Reduced Complexity Syndrome Based TTCM Decoder

Turbo codes were a major milestone in the forward error correction codes which can even achieve an excellent bit error rates at low SNR. The original proposal was for the BPSK scheme but were soon successful with multilevel coded as well. The “Turbo Trellis Coded Modulation” (TTCM) employing two TCM codes as parallel concatenation of two recursive TCM encoder, and adapted puncturing mechanism t...

Uplink Multiuser MIMO Detection Scheme with Reduced Computational Complexity

The wireless communication systems with multiple antennas have recently received significant attention due to their higher capacity and better immunity to fading channels as compared to single antenna systems. A fast antenna selection scheme has been introduced for the uplink multiuser multiple-input multiple-output (MIMO) detection to achieve diversity gains, but the computational complexity o...

Distributed Source-Channel Coding Using Reduced-Complexity Syndrome-Based TTCM

In the context of Distributed Joint Source-Channel coding (DJSC), we conceive reduced-complexity Turbo Trellis Coded Modulation (TTCM)-aided syndrome-based block decoding for estimating the crossover probability pe of the Binary Symmetric Channel (BSC), which models the correlation between a pair of sources. Our joint decoder achieves an accurate correlation estimation for varying correlation c...

A reduced complexity algorithm for iterative multiuser detection and decoding of asynchronous users