The Implementation of a 2/4/8 Antennas Configurable Diversity OFDM Receiver for Mobile HDTV Application

Jing, Gao; Iida, Takashi; Mizutani, Hiroyuki; Sakaguchi, S.; Murakami, Shuji; Shimizu, Atsushi; Wada, Tomohisa

doi:10.1155/2009/303627

Cited by 2 publications

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Following the equalizer, there are two stages of 4 inputs Maximum Ratio Combiner (MRC) blocks. Equation ( 1 ) shows the MRC computation [ 7 – 9 ]. MRC( k ) is the output of each MRC block:

Here, EQ( k ) 1–4 are 4 equalizer outputs, H ( k ) 1–4 are Channel Transfer Functions (CTFs) of each underwater channel, index k corresponds to subcarrier number, and σ n 1−4 2 are estimated average noise power at each underwater channel.…”

Section: Communication System Design With Impulsive Noise Cancellementioning

confidence: 99%

An OFDM Receiver with Frequency Domain Diversity Combined Impulsive Noise Canceller for Underwater Network

Saotome

Hai

Matsuda

et al. 2015

The Scientific World Journal

Self Cite

View full text Add to dashboard Cite

In order to explore marine natural resources using remote robotic sensor or to enable rapid information exchange between ROV (remotely operated vehicles), AUV (autonomous underwater vehicle), divers, and ships, ultrasonic underwater communication systems are used. However, if the communication system is applied to rich living creature marine environment such as shallow sea, it suffers from generated Impulsive Noise so-called Shrimp Noise, which is randomly generated in time domain and seriously degrades communication performance in underwater acoustic network. With the purpose of supporting high performance underwater communication, a robust digital communication method for Impulsive Noise environments is necessary. In this paper, we propose OFDM ultrasonic communication system with diversity receiver. The main feature of the receiver is a newly proposed Frequency Domain Diversity Combined Impulsive Noise Canceller. The OFDM receiver utilizes 20–28 KHz ultrasonic channel and subcarrier spacing of 46.875 Hz (MODE3) and 93.750 Hz (MODE2) OFDM modulations. In addition, the paper shows Impulsive Noise distribution data measured at a fishing port in Okinawa and at a barge in Shizuoka prefectures and then proposed diversity OFDM transceivers architecture and experimental results are described. By the proposed Impulsive Noise Canceller, frame bit error rate has been decreased by 20–30%.

show abstract

“…Following the equalizer, there are two stages of 4 inputs Maximum Ratio Combiner (MRC) blocks. Equation ( 1 ) shows the MRC computation [ 7 – 9 ]. MRC( k ) is the output of each MRC block:

Section: Communication System Design With Impulsive Noise Cancellementioning

confidence: 99%