In this paper we present an analytical approach to evaluate the M-QAM symbol error rate (SER) of Alamouti space time coded OFDM direct conversion receivers subject to carrier frequency offset (CFO), channel estimation errors, outdated channel state information, limited ADC resolution and flat receiver I/Q imbalance in Rayleigh time and frequency selective fading channels. The SER is numerically...

This paper examines the application of some techniques in Bluetooth communications expected to improve system’s performance under certain environmental conditions. The transmitter diversity Alamouti scheme [1] and receiver diversity have been evaluated and compared to the standard single antenna transmitter and receiver system by means of the achievable BER. Some analytical considerations about...

In this letter, we propose a blockwise phase rotation-aided analog transmit beamforming (BPR-ATB) scheme to improve the spectral efficiency and bit-error-rate (BER) performance in millimeter wave (mmWave) communication systems. Due angle optimization issues of conventional beamforming, design BPR-ATB for reducing rotated beamspace equivalent channel improving minimum Euclidean distance. To veri...

This is a companion technical report of the main manuscript “Physical-Layer Multicasting by Stochastic Transmit Beamforming and Alamouti Space-Time Coding”. The report serves to give detailed derivations of the achievable rate functions encountered in the main manuscript, which are too long to be included in the latter. In addition, more simulation results are presented to verify the viability ...

Time variation within an OFDM symbol causes intercarrier interference (ICI). In this letter, frequency-domain partial response coding (PRC) is investigated to reduce ICI in the Alamouti SFBC-OFDM system. Based on the expression of the ICI power in the SFBC-OFDM system with PRC, the near-optimal weights of PRC are derived. Simulation results show that the PRC scheme can reduce ICI effectively. k...

A study of space-time block coding in analytical form-multiple input and multiple output (STBC-MIMO) system was done in various cases. Initially, a basic Alamouti scheme for encoding was illustrated. Then, the performance of proposed STBC-MIMO was studied under varying a number of transmitting antennas, varying number of receiving antennas, varying channels, various modulations and also at vary...

In the context of the future communication system for the airport surface operations (AeroMACS), we investigate the 2×1 Alamouti scheme applied to the 802.16e standard for improving the performance of the forward link. We propose a novel space-time coding realization which preserves the original frame structure of WiMAX, analyzing its performance in a realistic airport environment. Simulation r...

This paper describes the concept, architecture, development and demonstration of a real time, maximum likelihood Alamouti decoder for a wireless 4-transmit 4-receiver multiple input and multiple output (MIMO) Smart Antenna Software Radio Test System (SASRATS) platform. It is implemented on a Xilinx Vertex 2 Pro Field Programmable Gate Array (FPGA). Hardware, firmware, use of the Xilinx Core Gen...

The objective of fourth generation (4G) wireless communication systems is to achieve broadband connectivity anytime, anywhere and between anything. It is anticipated that in the next two decades, this is likely to be achieved by employing multiple antennas at the base station (service provider) as well as at the end user devices. In this regard, the past decade has seen an explosion of interest...

Two complex orthogonal space-time codes for eight transmit antennas" (2004). Two new constructions of complex orthogonal space-time block codes of order 8 based on the theory of amicable orthogonal designs are presented and their performance compared with that of the standard code of order 8. These new codes are suitable for multi-modulation schemes where the performance can be sacrificed for a...