Mutual-Information-Based Adaptive Bit-Loading Algorithms for LDPC-Coded OFDM

In this paper we analyze the performance of an LDPC-coded OFDM system with adaptive bit-loading based on mutual information. We demonstrate that the mutual information between the transmitted binary sequence and the soft information input to LDPC decoder well characterizes the performance of the LDP...

Celý popis

Uloženo v:

Podrobná bibliografie
Vydáno v:	IEEE transactions on wireless communications Ročník 6; číslo 5; s. 1670 - 1680
Hlavní autoři:	Yan Li, Ryan, W.E.
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Piscataway, NJ IEEE 01.05.2007 Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:	Adaptive algorithms Adaptive systems Algorithm design and analysis Algorithms Allocations Applied sciences Binary sequences Decoders Decoding Design engineering Exact sciences and technology Information analysis Modulation Mutual information OFDM modulation Orthogonal Frequency Division Multiplexing Parity check codes Performance analysis Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Throughput Transmission and modulation (techniques and equipments) Wireless communication Performance evaluation Adaptive algorithm OFDM Adaptive system Information rate Decoding Packet error rate Power allocation Adaptive method Information transmission LDPC codes Multicarrier modulation Binary sequence Upper bound coded modulation Orthogonal frequency division multiplexing Parity check codes Error correcting code Adaptive bit-loading Adaptive modulation Mutual information
ISSN:	1536-1276, 1558-2248
On-line přístup:	Získat plný text
Tagy:	Přidat tag Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!

Popis
Shrnutí:	In this paper we analyze the performance of an LDPC-coded OFDM system with adaptive bit-loading based on mutual information. We demonstrate that the mutual information between the transmitted binary sequence and the soft information input to LDPC decoder well characterizes the performance of the LDPC-coded system, independent of the modulation type and the number of carriers. We design mutual information-based adaptive bit-loading and power allocation algorithms for LDPC-coded OFDM systems to maximize throughput performance under a packet-error rate constraint. To characterize the performance of the system under study, we derive the achievable information rate and a throughput upper bound for the system
Bibliografie:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 14 content type line 23 ObjectType-Article-1 ObjectType-Feature-2
ISSN:	1536-1276 1558-2248
DOI:	10.1109/TWC.2007.360369