A LDPC-Coded Distributed Alamouti Space-time Relay Cooperation Scheme over Rayleigh Fading Channels
نویسندگان
چکیده
An efficient distributed Alamouti Space-time coded relay cooperation scheme is proposed over a Rayleigh fading channel, where structured irregular systematic low-densityparity-check (LDPC) codes are employed. In the known channel state information (CSI) scenario, a concatenation of combiner and joint iterative decoder is effectively carried out in the destination. The theoretical analysis and numerical simulations show that the proposed LDPC-coded cooperation scheme can well combine diversity and channel coding gain, and clearly outperforms the conventional cooperation under the same conditions. Keywords-alamouti space-time block coding; coded relay cooperation; LDPC codes; joint iterative decoding
منابع مشابه
Performance of Concatenated Optimized Irregular LDPC Code with Alamouti Coded MIMO-OFDM Systems
-Multiple input multiple output (MIMO) communication systems along with orthogonal frequency division multiplexing (OFDM) have a great potential for future 4G broadband wireless communications. Recently, low density parity check codes (LDPC) achieves good error correcting performance and capacity near Shannon’s limit. In this paper, we considered the performance analysis of serially concatenate...
متن کاملTurbo Coded OFDM Combined with MIMO Antennas Based on Matched Interleaver for Coded-Cooperative Wireless Communication
A turbo coded cooperative orthogonal frequency division multiplexing (OFDM) with multiple-input multiple-output (MIMO) antennas scheme is considered, and its performance over a fast Rayleigh fading channel is evaluated. The turbo coded OFDM incorporates MIMO (2 × 2) Alamouti space-time block code. The interleaver design, and its placement always plays a vital role in the performance of a turbo ...
متن کاملPerformance evaluation of STBC based cooperative systems over slow Rayleigh fading channel
In this paper, we study the transmit diversity of the cooperative relay system employing multiple-input multiple-output (MIMO) technology, especially for the Alamouti space-time block codes (STBC), over slow Rayleigh fading channel. The transmit diversity gain is achieved by STBC and cooperative technology. Maximum ratio combining (MRC) and maximum likelihood detection (MLD) are applied in the ...
متن کاملPerformance Analysis of Coded Cooperation Based on Distributed Turbo Codes with Multiple Relays
—Diversity is an effective technique to enhance link quality and enable multiple users to pool their resources to form a virtual antenna array that obtains spatial diversity. In this paper, we propose a generalized Distributed Turbo Codes (DTC)-based coded cooperation protocol for two-hop relay networks with an arbitrary number of relays. This scheme aims at achieving improved diversity over t...
متن کاملPerformance Analysis of a Concatenated Ldpc Coded Alamouti-based Stbc-ofdm System on Text Message Transmission
This paper investigates the impact of concatenation of an interleaved low density parity check (LDPC) code with convolutional channel coding on the performance of the space time block coded (STBC) orthogonal frequency-division multiplexing (OFDM) wireless communication system on text message transmission. The concatenated channel encoded OFDM system deploys various digital modulations (BPSK, QP...
متن کامل