Analysis and Construction of Full-Diversity Joint Network-LDPC Codes for Cooperative Communications
نویسندگان
چکیده
منابع مشابه
Analysis and Construction of Full-Diversity Joint Network-LDPC Codes for Cooperative Communications
Transmit diversity is necessary in harsh environments to reduce the required transmit power for achieving a given error performance at a certain transmission rate. In networks, cooperative communication is a well-known technique to yield transmit diversity and network coding can increase the spectral efficiency. These two techniques can be combined to achieve a double diversity order for a maxi...
متن کاملConstruction of Full-Diversity LDPC Lattices for Block-Fading Channels
LDPC lattices were the first family of lattices which have an efficient decoding algorithm in high dimensions over an AWGN channel. Considering Construction D’ of lattices with one binary LDPC code as underlying code gives the well known Construction A LDPC lattices or 1-level LDPC lattices. Block-fading channel (BF) is a useful model for various wireless communication channels in both indoor a...
متن کاملConstruction of Irregular QC-LDPC Codes in Near-Earth Communications
—High-speed, high-reliability requirements and strict power limitation of near-earth communications yield that the channel coding must have high coding gain and lower error floor. In this paper, an irregular quasi-cyclic low-density paritycheck (QC-LDPC) code for specific use in near-earth communications is proposed. In order to eliminate the impact of short-cycles and further improve the perf...
متن کاملA Family of Distributed Space-Time Trellis Codes Achieving Full Diversity for Asynchronous Cooperative Communications
In current cooperative communication schemes, to achieve cooperative diversity, synchronization between terminals is usually assumed, which may not be practical since each terminal has its own local oscillator. In this paper, we first present a necessary and sufficient condition for the space-time trellis codes based on the stack construction proposed by Hammons and El Gamal to possess the full...
متن کاملCharacterization of $2times 2$ full diversity space-time codes and inequivalent full rank spaces
In wireless communication systems, space-time codes are applied to encode data when multiple antennas are used in the receiver and transmitter. The concept of diversity is very crucial in designing space-time codes. In this paper, using the equivalent definition of full diversity space-time codes, we first characterize all real and complex $2times 2$ rate one linear dispersion space-...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EURASIP Journal on Wireless Communications and Networking
سال: 2010
ISSN: 1687-1499
DOI: 10.1155/2010/805216