Optimum Power and Rate Allocation for Coded V-BLAST: Average Optimization

Optimum Power and Rate Allocation for Coded V-BLAST

An analytical framework for minimizing the outage probability of a coded spatial multiplexing system while keeping the rate close to the capacity is developed. Based on this framework, specific strategies of optimum power and rate allocation for the coded V-BLAST architecture are obtained and its performance is analyzed. A fractional waterfilling algorithm, which is shown to optimize both the c...

Transmit power allocation for an extended V-BLAST system

Vertical Bell Laboratories Layered Space-Time (V-BLAST) is a promising system that realizes the enormous capacity of multiple-input multiple-output (MIMO) communications. In this paper, we present an extension of V-BLAST, and propose an effective transmit power allocation scheme for the extended system. The proposed transmit power allocation scheme minimizes the bit error rate (BER) averaged ov...

Alamouti-coded decode-and-forward protocol with optimum relay selection and power allocation for cooperative communications

In this paper, an Alamouti-coded decode-and-forward protocol with optimum relay selection for three-user one destination cooperative communications is investigated. Particularly, we design the new protocol that allows the source node retransmitting the signal to the destination node at the same time as the relay node forwarding the received signal to the destination node with an Alamouti coding...

An Efficient Rate Allocation Scheme with Optimum Peak-to-Average Power Ratio for Transmission of Image Streams over OFDM Channels

This paper proposes new scheme for efficient rate allocation in conjunction with reducing peak-toaverage power ratio (PAPR) in orthogonal frequencydivision multiplexing (OFDM) system. Modification of the set partitioning in hierarchical trees (SPIHT) image coder is proposed to generate four different groups of bit-stream relative to its significances. The significant bits, the sign bits, the se...

Optimum Power Allocation for Cooperative Communications