High-rate layered space-time transmissions based on constellation-rotation
نویسندگان
چکیده
Recent theoretical and experimental studies have shown that with affordable complexity, layered space-time (LST) transmissions can attain very high spectral efficiency in a rich-scattering environment. In this paper, we propose a novel high rate linearly precoded LST system, which allows for any number of transmit and receive antennas, and offers flexibility in trading performance with bandwidth efficiency and decoding complexity. Even with sub-optimum decoding, the system enjoys considerable transmit diversity gains. Its superior performance over existing uncoded V-BLAST and Linear Dispersion (LD) codes is confirmed by simulations.
منابع مشابه
A Thesis for the Degree of Master Constellation Rotation based Enhanced Space Time Block Code
In a multiple-input multiple-output (MIMO) channel, created by employing multiple antennas at the transmitter and receiver, the system capacity and diversity dramatically increase. In a view of diversity, the space time block code (STBC) was proposed to enhance diversity gain. On the other hand, the bell labs layered space time architecture (BLAST) can achieve full data rate. To achieve both ad...
متن کاملBlind Joint Channel Estimation and Data Detection for Precoded Multi-Layered Space-Frequency MIMO Schemes
Due to the scarcity of the electromagnetic spectrum, multidimensional signaling schemes that take into account several signal dimensions such as space, time, frequency and constellation, are good candidates for increasing the data rate and/or improving the link reliability in future communication systems. This work addresses the problem of joint channel estimation and data detection in precoded...
متن کاملLayered Space-Time Complex Field Coding: Full-Diversity with Full-Rate, and Tradeoffs
Multi-antenna systems allow for a significant increase in the transmission rate of coherent wireless transmissions over flat Rayleigh fading channels. Various multi-antenna designs have been developed in recent years targeting either high-performance, or, high rate. In this paper, we design a layered space-time (ST) scheme equipped with linear complex field (LCF) coding, which enables full dive...
متن کاملFull-Rate Full-Diversity STBC with Constellation Rotation
In this paper, a class of Generalized Quasi-Orthogonal Space-Time Block Code is proposed to achieve full-rate transmission with low-complexity maximum likelihood decoding. Full transmit-diversity is achieved through rhe constellation rotation technique. Code construction criteria for this class of code are listed. Average lideterminant criterion is proposed for optimizing the degree of constell...
متن کاملSpatial multiplexing with transmit antenna and constellation selection for correlated MIMO fading channels
We consider spatial multiplexing systems in correlated multiple-input multiple-output (MIMO) fading channels with equal power allocated to each transmit antenna. Under this constraint, the number and subset of transmit antennas together with the transmit symbol constellations are determined assuming knowledge of the channel correlation matrices. We first consider a fixed data rate system and va...
متن کامل