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Dive into the research topics where Feng-Wen Sun is active.

Publication


Featured researches published by Feng-Wen Sun.


International Journal of Satellite Communications and Networking | 2004

DVB-S2 low density parity check codes with near Shannon limit performance

Mustafa Eroz; Feng-Wen Sun; Lin-Nan Lee

Low density parity check (LDPC) codes are chosen for the second generation digital video broadcasting (DVB) standard. In this paper, we review LDPC codes in general, present belief propagation decoding algorithm in simple terms, describe the standardized LDPC codes and show their performance. Copyright


IEEE Transactions on Communications | 2006

An innovative low-density parity-check code design with near-Shannon-limit performance and simple implementation

Mustafa Eroz; Feng-Wen Sun; Lin-Nan Lee

A novel parity-check matrix design for low-density parity-check (LDPC) codes is described. By eliminating the routing problem associated with LDPC codes, the design results in a small implementation area, and the codes have outstanding error-rate performance close to the Shannon limit for a wide range of code rates, from 1/4 to 9/10, and for various modulation schemes such as binary phase-shift keying (PSK), quaternary PSK, 8-PSK, 16-amplitude PSK (APSK), and 32-APSK. As a result, LDPC codes designed with this method have been standardized for next-generation digital video broadcasting.


personal, indoor and mobile radio communications | 2004

Impact of near Shannon-limit codes on wireless communications technology

Mustafa Eroz; Lin-Nan Lee; Feng-Wen Sun

Tremendous progress has been made on channel coding techniques during the last decade, starting from the invention of turbo codes and the rediscovery of the low-density parity check (LDPC) codes. These codes essentially closed the gap between the Shannon capacity limit and practical implementation. Commercial adoption of these new coding techniques, however, depends heavily on the introduction of the technology into communication standards. In this paper, we briefly review the considerations when turbo codes and LDPC codes were introduced to the 3/sup rd/ generation wireless standards (3GPP and 3GPP2), and the digital video broadcast for satellite standard (DVB-S2), respectively. We then examine a few possible approaches to take advantage of these powerful codes for future wireless channels.


Archive | 2002

Third Generation Wireless Communication Technologies

Lin-nan Lee; Feng-Wen Sun; Khalid Karimullah; Mustafa Eroz; Roger Hammons

The debate on the third generation wireless system is not about the selection of the core technologies, such as CDMA versus TDMA. Rather, it is on whether the design objectives properly address the market needs and whether there are sufficient technical innovations to achieve these objectives. This chapter discusses the essential design objectives for a successful third generation wireless system. A number of key innovations intended to meet these objectives are presented. We will briefly describe the cdma2000 forward and reverse link design. In the forward link an alternative approach for the 3X mode that exhibits advantages of two approaches currently included in the cdma2000 standard is outlined. In the reverse link, we will present a media access scheme that combines PRMA for large packets and ISMA with capture message for short packets to significantly improve the efficiency of channel utilisation for high-speed data transmission. In both the forward and reverse links, Turbo FEC codes further increase the underlying channel capacity by 50–60 percent. By combining an efficient reverse link multiple access architecture, and optimised FEC coding techniques, third generation wireless systems can reach an unprecedented level of performance in high-speed packet data delivery and improved voice capacity with minimum impact on implementation complexity.


personal indoor and mobile radio communications | 2000

Wireless communications technology and network architecture for the new millennium

Lin-Nan Lee; Mustafa Eroz; A. Roger Hammons; Feng-Wen Sun

Wireless data applications have just begun to gain popularity in the marketplace. The rollout of 3rd generation (3G) wireless networks is anticipated in the next few years. We examine wireless data networks that are complementary to the 3G wireless networks, their technologies and the challenges. In particular, we present some of the industry initiatives in the millimeter wave frequency bands for broadband and satellite delivered fixed wireless data network. Furthermore, we offer our perspectives on how these different networks will evolve and inter-work together to provide a seamless experience for the end users. Fixed data networks need to be competitive with wire-line services, this requires us to push advanced signal processing technologies further. We present the latest advances that we have made in channel coding and signal processing technologies to approach that goal.


Archive | 2005

Applying Near Shannon-limit Codes to Wireless Communications

Mustafa Eroz; Lin-nan Lee; Feng-Wen Sun

Tremendous progress has been made on channel coding techniques during the last decade, starting from the invention of turbo codes and the rediscovery of the low-density parity check (LDPC) codes. These codes essentially closed the gap between the Shannon capacity limit and practical implementation. Commercial adoption of these new coding techniques, however, depends heavily on the introduction of the technology into communication standards. In this paper, we will briefly review the considerations when turbo codes and LDPC codes were introduced to the 3rd generation wireless standards (3GPP& 3GPP2), and the digital video broadcast for satellite standard (DVB-S2), respectively. We will then examine a few possible approaches to take advantage of these powerful codes for future wireless channels.


Archive | 2003

Method and system for providing low density parity check (LDPC) encoding

Mustafa Eroz; Feng-Wen Sun; Lin-nan Lee


Archive | 2007

Method and system for routing in low density parity check (LDPC) decoders

Mustafa Eroz; Lin-nan Lee; Feng-Wen Sun; Bob Cassagnol; Adam Von Ancken


Archive | 1999

Single-LNB satellite data receiver

Douglas M. Dillon; A. Roger Hammons; Feng-Wen Sun


Archive | 2003

Bit labeling for amplitude phase shift constellation used with low density parity check (LDPC) codes

Mustafa Eroz; Feng-Wen Sun; Lin-nan Lee

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