A multicarrier CDMA communication system with adaptive transmission power allocation

Ye Hoon Lee

doi:10.1007/978-3-642-27552-4_101

A multicarrier CDMA communication system with adaptive transmission power allocation

Ye Hoon Lee

Electronic Engineering Program

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

Abstract

We propose a multicarrier code-division multiple-access (MC-CDMA) system with adaptive transmission power allocation. The transmission power is allocated over M' strongest subcarriers among M available ones. Using only M' subcarriers of which channel gains are relatively large indicates that the transmission power to maintain the desired received signal strength can be reduced, but decreasing M' also lead to a reduction of effective spreading gain to mitigate the multiple access interference. We analyze the trade-off between M' and effective spreading gain, and find the optimal M' that minimizes the average bit error rate (BER). Our results show that the bit error rate (BER) can be significantly reduced if M' is properly chosen, and transmit signals over only the strongest subcarrier (M'=1) is the best especially for low SNR regions.

Original language	English
Title of host publication	Frontiers in Computer Education
Pages	769-775
Number of pages	7
DOIs	https://doi.org/10.1007/978-3-642-27552-4_101
State	Published - 2012
Event	2011 International Conference on Frontiers in Computer Education, ICFCE 2011 - Macao, China Duration: 1 Dec 2011 → 2 Dec 2011

Publication series

Name	Advances in Intelligent and Soft Computing
Volume	133 AISC
ISSN (Print)	1867-5662

Conference

Conference	2011 International Conference on Frontiers in Computer Education, ICFCE 2011
Country/Territory	China
City	Macao
Period	1/12/11 → 2/12/11

Keywords

adaptive
CDMA
multicarrier

Access to Document

10.1007/978-3-642-27552-4_101

Cite this

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title = "A multicarrier CDMA communication system with adaptive transmission power allocation",

abstract = "We propose a multicarrier code-division multiple-access (MC-CDMA) system with adaptive transmission power allocation. The transmission power is allocated over M' strongest subcarriers among M available ones. Using only M' subcarriers of which channel gains are relatively large indicates that the transmission power to maintain the desired received signal strength can be reduced, but decreasing M' also lead to a reduction of effective spreading gain to mitigate the multiple access interference. We analyze the trade-off between M' and effective spreading gain, and find the optimal M' that minimizes the average bit error rate (BER). Our results show that the bit error rate (BER) can be significantly reduced if M' is properly chosen, and transmit signals over only the strongest subcarrier (M'=1) is the best especially for low SNR regions.",

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N2 - We propose a multicarrier code-division multiple-access (MC-CDMA) system with adaptive transmission power allocation. The transmission power is allocated over M' strongest subcarriers among M available ones. Using only M' subcarriers of which channel gains are relatively large indicates that the transmission power to maintain the desired received signal strength can be reduced, but decreasing M' also lead to a reduction of effective spreading gain to mitigate the multiple access interference. We analyze the trade-off between M' and effective spreading gain, and find the optimal M' that minimizes the average bit error rate (BER). Our results show that the bit error rate (BER) can be significantly reduced if M' is properly chosen, and transmit signals over only the strongest subcarrier (M'=1) is the best especially for low SNR regions.

AB - We propose a multicarrier code-division multiple-access (MC-CDMA) system with adaptive transmission power allocation. The transmission power is allocated over M' strongest subcarriers among M available ones. Using only M' subcarriers of which channel gains are relatively large indicates that the transmission power to maintain the desired received signal strength can be reduced, but decreasing M' also lead to a reduction of effective spreading gain to mitigate the multiple access interference. We analyze the trade-off between M' and effective spreading gain, and find the optimal M' that minimizes the average bit error rate (BER). Our results show that the bit error rate (BER) can be significantly reduced if M' is properly chosen, and transmit signals over only the strongest subcarrier (M'=1) is the best especially for low SNR regions.

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KW - multicarrier

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A multicarrier CDMA communication system with adaptive transmission power allocation

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