DSP --- from concept to code

We are a DSP consultancy house in India offering: 

· DSP Algorithm development

· Coding of Texas Instruments’ DSP processors: TMS320C62x/TMS320C67x/TMS320C64x

· Coding of any ARM processor

· Coding of any 8051/8052 based microcontroller

· Coding of TI MSP430

· Development of Numerical Linear Algebra and Numerical Analysis software

We offer the following training courses for working professionals:

· DSP Training with MATLAB

· Digital Control with MATLAB

Our areas of expertise include:

· Development of general DSP component libraries for any processor.

· Digital Control and Motion Control with Kalman Filtering

· Error Control Coding: includes DSP implementation of Turbo codes, LDPC codes etc.

· Digital Communications: especially various modem algorithms like DMT, DWMT, OFDM.

· Cryptography and its implementation on various resource constrained processors like DSP processors, ARM based processors, 8051 based processors, TI MSP430 etc.

Current client project:

· Microcontroller based control of DC motors

Products under development:

· To be updated soon!

Publications:

1) “Bilinear Transformation: A Matrix Method”, AMSE, (France), A, Vol 1992-93. (Paper available on request)

Abstract: The bilinear transformation can be achieved using the method of synthetic division. A good deal of simplification is obtained when the process is implemented as a series of matrix operations. Besides, the matrices are found to have simple structures suitable for algorithmic implementation.

2)  “A New Method for Computing Robustness Margins for Complex Parametric Uncertainties”, Proc of CONTROL 97, Mexico, May 1997, pp.187 – 192. (Paper available on request)

3) “Density Evolution of Multiple Channel Communications Scenario”, IETE Journal of Research, March-April 2005, Vol. 51, No. 2, pp. 163-170.  (Paper available on request).

Abstract: Low density parity check (LDPC) codes are a class of very powerful error correcting codes. While LDPC codes already have a rich theory, issues specific to implementation are an active area of research. In this paper we look at the issue of designing LDPC codes for multiple-channel communication scenarios. We have proposed a new description of LDPC codes that utilizes the a priori information about noise behavior in such scenarios for performance analysis of LDPC codes. We show that this new description has a better predictive ability than the conventional description.

4) Mastering Turbo Coding for Wireless Apps, www.commsdesign.com

Professional Membership:

1) International Association for Cryptology (IACR) www.iacr.org

2) Cryptology Research Society of India.  www.crsind.com

3) IEEE, www.ieee.org

Interesting links:

1) International Page on Error Control Coding --- http://www.itr.unisa.edu.au/~steven/coding

2) US Patent Office --- www.uspto.gov

3) Fresh Patents --- www.freshpatents.com

Contact:

Nalin Pithwa, MS(DSP), MS(Math): nalin@dspderby.com

Location:     Mahavir Jyot C/1,

Vallabh Baug Lane,

Mumbai 400 077.

India.

Ph: +91-22-25091376