Throughput analysis of DS-CDMA wireless packet access using frequency-domain equalization and random TPC

Haruki Ito; Eisuke Kudoh; Zhisen Wang; Fumiyuki Adachi

doi:10.1109/VETECF.2008.399

Throughput analysis of DS-CDMA wireless packet access using frequency-domain equalization and random TPC

Haruki Ito, Eisuke Kudoh, Zhisen Wang, Fumiyuki Adachi

Research Organization of Electrical Communication (ROEC)

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

2 Citations (Scopus)

Abstract

Recently, we proposed a random transmit power control (TPC) to increase the uplink capacity of DS-CDMA wireless packet access using Rake combining. Furthermore, we evaluated the combined effect of random TPC and inter-path interference (IPI) cancellation and showed that a significant throughput improvement can be achieved if the IPI is sufficiently suppressed. Frequency-domain equalization (FDE) is a promising technique to suppress the IPI. In this paper, we derive an expression for the received signal-to-interference plus noise power ratio (SINR) for a DS-CDMA wireless packet access using FDE and random TPC. Using the derived SINR expression, we evaluate its throughput performance by numerical computation. We compare the throughput using Rake combining with that using FDE to discuss the IPI suppression effect of FDE. It is shown that the throughput using MMSE-FDE approaches that achievable using rake combining w/perfect IC.

Original language	English
Title of host publication	The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall
DOIs	https://doi.org/10.1109/VETECF.2008.399
Publication status	Published - 2008
Event	68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference - Calgary, AB, Canada Duration: 2008 Sep 21 → 2008 Sep 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	Canada
City	Calgary, AB
Period	08/9/21 → 08/9/24

Keywords

Capture effect
Component; wireless packet access
DS-CDMA
Frequency-domain equalization
IPI cancellation
Transmit power control

ASJC Scopus subject areas

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

Access to Document

10.1109/VETECF.2008.399

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Cite this

Throughput analysis of DS-CDMA wireless packet access using frequency-domain equalization and random TPC. / Ito, Haruki; Kudoh, Eisuke; Wang, Zhisen; Adachi, Fumiyuki.

The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall. 2008. 4657231 (IEEE Vehicular Technology Conference).

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

Ito, H, Kudoh, E, Wang, Z & Adachi, F 2008, Throughput analysis of DS-CDMA wireless packet access using frequency-domain equalization and random TPC. in The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall., 4657231, 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.2008.399

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keywords = "Capture effect, Component; wireless packet access, DS-CDMA, Frequency-domain equalization, IPI cancellation, Transmit power control",

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AB - Recently, we proposed a random transmit power control (TPC) to increase the uplink capacity of DS-CDMA wireless packet access using Rake combining. Furthermore, we evaluated the combined effect of random TPC and inter-path interference (IPI) cancellation and showed that a significant throughput improvement can be achieved if the IPI is sufficiently suppressed. Frequency-domain equalization (FDE) is a promising technique to suppress the IPI. In this paper, we derive an expression for the received signal-to-interference plus noise power ratio (SINR) for a DS-CDMA wireless packet access using FDE and random TPC. Using the derived SINR expression, we evaluate its throughput performance by numerical computation. We compare the throughput using Rake combining with that using FDE to discuss the IPI suppression effect of FDE. It is shown that the throughput using MMSE-FDE approaches that achievable using rake combining w/perfect IC.

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KW - Frequency-domain equalization

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KW - Transmit power control

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