An optimal entropy coding scheme for efficient implementation of pulse shaping fir filters in digital receivers

A. P. Vinod; A. B. Premkumar; E. M.K. Lai

doi:10.1109/ISCAS.2003.1205815

An optimal entropy coding scheme for efficient implementation of pulse shaping fir filters in digital receivers

A. P. Vinod^*, A. B. Premkumar, E. M.K. Lai

^*Corresponding author for this work

Research output: Contribution to journal › Conference article published in journal › peer-review

11 Citations (Scopus)

Abstract

The most computationally intensive part of wide-band receivers is the IF processing block. Digital filtering is the main task in IF processing. Infinite precision filters require complicated digital circuits due to coefficient multiplication, This paper presents an efficient method to implement pulse shaping filters for a dual-mode GSM/W-CDMA receiver. We use an arithmetic scheme, known as pseudo floating-point (PFP) representation to encode the filter coefficients. By employing a span reduction technique, we show that the filters can be coded using an optimal entropy scheme employing PFP which requires only considerably fewer bits than conventional 24-bit and 16-bit fixed-point filters. Simulation results show that the magnitude responses of the filters coded in PFP meet the attenuation requirements of GSM/W-CDMA specifications.

Original language	English
Pages (from-to)	IV229-IV232
Journal	Proceedings - IEEE International Symposium on Circuits and Systems
Volume	4
DOIs	https://doi.org/10.1109/ISCAS.2003.1205815
Publication status	Published - 2003
Externally published	Yes
Event	Proceedings of the 2003 IEEE International Symposium on Circuits and Systems - Bangkok, Thailand Duration: 25 May 2003 → 28 May 2003

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@article{81533e49adfa462b9568eadce9f03409,

title = "An optimal entropy coding scheme for efficient implementation of pulse shaping fir filters in digital receivers",

abstract = "The most computationally intensive part of wide-band receivers is the IF processing block. Digital filtering is the main task in IF processing. Infinite precision filters require complicated digital circuits due to coefficient multiplication, This paper presents an efficient method to implement pulse shaping filters for a dual-mode GSM/W-CDMA receiver. We use an arithmetic scheme, known as pseudo floating-point (PFP) representation to encode the filter coefficients. By employing a span reduction technique, we show that the filters can be coded using an optimal entropy scheme employing PFP which requires only considerably fewer bits than conventional 24-bit and 16-bit fixed-point filters. Simulation results show that the magnitude responses of the filters coded in PFP meet the attenuation requirements of GSM/W-CDMA specifications.",

author = "Vinod, \{A. P.\} and Premkumar, \{A. B.\} and Lai, \{E. M.K.\}",

year = "2003",

doi = "10.1109/ISCAS.2003.1205815",

language = "English",

volume = "4",

pages = "IV229--IV232",

journal = "Proceedings - IEEE International Symposium on Circuits and Systems",

issn = "0271-4310",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

note = "Proceedings of the 2003 IEEE International Symposium on Circuits and Systems ; Conference date: 25-05-2003 Through 28-05-2003",

}

TY - JOUR

T1 - An optimal entropy coding scheme for efficient implementation of pulse shaping fir filters in digital receivers

AU - Vinod, A. P.

AU - Premkumar, A. B.

AU - Lai, E. M.K.

PY - 2003

Y1 - 2003

N2 - The most computationally intensive part of wide-band receivers is the IF processing block. Digital filtering is the main task in IF processing. Infinite precision filters require complicated digital circuits due to coefficient multiplication, This paper presents an efficient method to implement pulse shaping filters for a dual-mode GSM/W-CDMA receiver. We use an arithmetic scheme, known as pseudo floating-point (PFP) representation to encode the filter coefficients. By employing a span reduction technique, we show that the filters can be coded using an optimal entropy scheme employing PFP which requires only considerably fewer bits than conventional 24-bit and 16-bit fixed-point filters. Simulation results show that the magnitude responses of the filters coded in PFP meet the attenuation requirements of GSM/W-CDMA specifications.

AB - The most computationally intensive part of wide-band receivers is the IF processing block. Digital filtering is the main task in IF processing. Infinite precision filters require complicated digital circuits due to coefficient multiplication, This paper presents an efficient method to implement pulse shaping filters for a dual-mode GSM/W-CDMA receiver. We use an arithmetic scheme, known as pseudo floating-point (PFP) representation to encode the filter coefficients. By employing a span reduction technique, we show that the filters can be coded using an optimal entropy scheme employing PFP which requires only considerably fewer bits than conventional 24-bit and 16-bit fixed-point filters. Simulation results show that the magnitude responses of the filters coded in PFP meet the attenuation requirements of GSM/W-CDMA specifications.

UR - https://www.scopus.com/pages/publications/17944398578

U2 - 10.1109/ISCAS.2003.1205815

DO - 10.1109/ISCAS.2003.1205815

M3 - Conference article published in journal

AN - SCOPUS:17944398578

SN - 0271-4310

VL - 4

SP - IV229-IV232

JO - Proceedings - IEEE International Symposium on Circuits and Systems

JF - Proceedings - IEEE International Symposium on Circuits and Systems

T2 - Proceedings of the 2003 IEEE International Symposium on Circuits and Systems

Y2 - 25 May 2003 through 28 May 2003

ER -

An optimal entropy coding scheme for efficient implementation of pulse shaping fir filters in digital receivers

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