Interference suppression for code-division multiple-access communications in an underwater acoustic channel

Journal of the Acoustical Society of America

Volumn 126, Issue 1, 2009, Pages 220-228

  Yang, T C ^a   Yang, Wen Bin ^b  

^a NAVAL RESEARCH LABORATORY   (United States)

^b NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CODE ORTHOGONALITY; CODE SEQUENCES; CODE-DIVISION MULTIPLE-ACCESS; DESIRED SIGNAL; DIRECT SEQUENCE SPREAD SPECTRUM; DISTANT USERS; INTERFERENCE REJECTION; INTERFERENCE SIGNAL; MATCHED FILTERS; MULTI-PATH; NEAR-FAR PROBLEM; RESIDUAL SIGNALS; SIGNAL ARRIVAL TIME; SIGNAL TO INTERFERENCE RATIO; SOUND SPEED; SOURCE LEVEL; STRONG INTERFERENCE; UNDERWATER ACOUSTIC CHANNELS; UNDERWATER CHANNELS; WALSH HADAMARD TRANSFORMS;

BINARY SEQUENCES; BIT ERROR RATE; INTERFERENCE SUPPRESSION; MULTIPLE ACCESS INTERFERENCE;

UNDERWATER ACOUSTICS;

WATER;

ACCURACY; ACOUSTICS; ALGORITHM; ANALYTIC METHOD; ARTICLE; FILTER; INFORMATION PROCESSING; MATHEMATICAL ANALYSIS; PRIORITY JOURNAL; SIGNAL DETECTION; SIGNAL NOISE RATIO; SOUND TRANSMISSION; SPECTRUM; VELOCITY;

EID: 68149117121     PISSN: 00014966     EISSN: None     Source Type: Journal    
DOI: 10.1121/1.3147484     Document Type: Article

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18. The data the authors have use long (511) code sequences as the original purpose was for low signal-to-noise ratio (SNR) underwater acoustic communications. The methods discussed in this paper can be applied to DS-CDMA signals for short code sequences as well. However, as noted above, the available orthogonal codes with short m -sequences are very limited.