DS-CDMA MMSE turbo equalization using 2-step maximum likelihood channel estimation

Yohei Kojima; Kazuaki Takeda; Fumiyuki Adachi

doi:10.1109/VETECF.2008.180

DS-CDMA MMSE turbo equalization using 2-step maximum likelihood channel estimation

Yohei Kojima, Kazuaki Takeda, Fumiyuki Adachi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion and frequency-domain inter-chip interference (ICI) cancellation can be incorporated into turbo decoding (this is called the MMSE turbo equalization in this paper) to improve the bit error rate (BER) performance for direct sequence code division multiple access (DS-CDMA). DS-CDMA MMSE turbo equalization requires accurate channel estimation. The performance of MMSE turbo equalization is sensitive to channel estimation accuracy. Recently, we proposed a 2-step maximum likelihood channel estimation (MLCE) for DS-CDMA with FDE. In this paper, we apply 2-step MLCE to DS-CDMA MMSE turbo equalization and evaluate by computer simulation the achievable BER performance in a frequency-selective block Rayleigh fading channel.

Original language	English
Title of host publication	The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall
DOIs	https://doi.org/10.1109/VETECF.2008.180
Publication status	Published - 2008
Externally published	Yes
Event	68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference - Calgary, AB, Canada Duration: 2008 Sept 21 → 2008 Sept 24

Publication series

Name	IEEE Vehicular Technology Conference
ISSN (Print)	1550-2252

Other

Other	68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference
Country/Territory	Canada
City	Calgary, AB
Period	08/9/21 → 08/9/24

Keywords

Channel estimation
Component
DS-CDMA
Frequency-domain ICI cancellation
Frequency-domain equalization
MMSE turbo equalization

ASJC Scopus subject areas

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

Access to Document

10.1109/VETECF.2008.180

Cite this

Kojima, Y, Takeda, K & Adachi, F 2008, DS-CDMA MMSE turbo equalization using 2-step maximum likelihood channel estimation. in The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall., 4657012, IEEE Vehicular Technology Conference, 68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference, Calgary, AB, Canada, 08/9/21. https://doi.org/10.1109/VETECF.2008.180

@inproceedings{82d8500395be47228b1cbbaa4d7aca11,

title = "DS-CDMA MMSE turbo equalization using 2-step maximum likelihood channel estimation",

abstract = "Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion and frequency-domain inter-chip interference (ICI) cancellation can be incorporated into turbo decoding (this is called the MMSE turbo equalization in this paper) to improve the bit error rate (BER) performance for direct sequence code division multiple access (DS-CDMA). DS-CDMA MMSE turbo equalization requires accurate channel estimation. The performance of MMSE turbo equalization is sensitive to channel estimation accuracy. Recently, we proposed a 2-step maximum likelihood channel estimation (MLCE) for DS-CDMA with FDE. In this paper, we apply 2-step MLCE to DS-CDMA MMSE turbo equalization and evaluate by computer simulation the achievable BER performance in a frequency-selective block Rayleigh fading channel.",

keywords = "Channel estimation, Component, DS-CDMA, Frequency-domain ICI cancellation, Frequency-domain equalization, MMSE turbo equalization",

author = "Yohei Kojima and Kazuaki Takeda and Fumiyuki Adachi",

year = "2008",

doi = "10.1109/VETECF.2008.180",

language = "English",

isbn = "9781424417223",

series = "IEEE Vehicular Technology Conference",

booktitle = "The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall",

note = "68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference ; Conference date: 21-09-2008 Through 24-09-2008",

}

TY - GEN

T1 - DS-CDMA MMSE turbo equalization using 2-step maximum likelihood channel estimation

AU - Kojima, Yohei

AU - Takeda, Kazuaki

AU - Adachi, Fumiyuki

PY - 2008

Y1 - 2008

N2 - Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion and frequency-domain inter-chip interference (ICI) cancellation can be incorporated into turbo decoding (this is called the MMSE turbo equalization in this paper) to improve the bit error rate (BER) performance for direct sequence code division multiple access (DS-CDMA). DS-CDMA MMSE turbo equalization requires accurate channel estimation. The performance of MMSE turbo equalization is sensitive to channel estimation accuracy. Recently, we proposed a 2-step maximum likelihood channel estimation (MLCE) for DS-CDMA with FDE. In this paper, we apply 2-step MLCE to DS-CDMA MMSE turbo equalization and evaluate by computer simulation the achievable BER performance in a frequency-selective block Rayleigh fading channel.

AB - Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion and frequency-domain inter-chip interference (ICI) cancellation can be incorporated into turbo decoding (this is called the MMSE turbo equalization in this paper) to improve the bit error rate (BER) performance for direct sequence code division multiple access (DS-CDMA). DS-CDMA MMSE turbo equalization requires accurate channel estimation. The performance of MMSE turbo equalization is sensitive to channel estimation accuracy. Recently, we proposed a 2-step maximum likelihood channel estimation (MLCE) for DS-CDMA with FDE. In this paper, we apply 2-step MLCE to DS-CDMA MMSE turbo equalization and evaluate by computer simulation the achievable BER performance in a frequency-selective block Rayleigh fading channel.

KW - Channel estimation

KW - Component

KW - DS-CDMA

KW - Frequency-domain ICI cancellation

KW - Frequency-domain equalization

KW - MMSE turbo equalization

UR - http://www.scopus.com/inward/record.url?scp=58149133483&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=58149133483&partnerID=8YFLogxK

U2 - 10.1109/VETECF.2008.180

DO - 10.1109/VETECF.2008.180

M3 - Conference contribution

AN - SCOPUS:58149133483

SN - 9781424417223

T3 - IEEE Vehicular Technology Conference

BT - The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall

T2 - 68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference

Y2 - 21 September 2008 through 24 September 2008

ER -

DS-CDMA MMSE turbo equalization using 2-step maximum likelihood channel estimation

Abstract

Publication series

Other

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this