Multicell uplink spectral efficiency of coded DS-CDMA with random signatures

Benjamin M. Zaidel; Shlomo Shamai; Sergio Verdú

doi:10.1109/49.942517

Multicell uplink spectral efficiency of coded DS-CDMA with random signatures

Benjamin M. Zaidel, Shlomo Shamai, Sergio Verdú

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

A simple multicell uplink communication model is suggested and analyzed for optimally coded randomly spread direct sequence code-division multiple access (DS-CDMA). The model adheres to Wyner's (1994) infinite linear cell-array model, according to which only adjacent-cell interference is present, and characterized by a single parameter 0 ≤ α ≤ 1. The discussion is confined to asymptotic analysis where both the number of users and the processing gain go to infinity, while their ratio goes to some finite constant. Single cell-site processing is assumed and four multiuser detection strategies are considered: the matched-filter detector, "optimum" detection with adjacent-cell interference treated as Gaussian noise, the linear minimum mean square error (MMSE) detector, and a detector that performs MMSE-based successive interference cancellation for intracell users with linear MMSE processing of adjacent-cell interference. Spectral efficiency is evaluated under three power allocation poli cies: equal received powers (for all users), equal rates, and a maximal spectral efficiency policy. Comparative results demonstrate how performance is affected by the introduction of intercell interference, and what is the penalty associated with the randomly spread coded DS-CDMA strategy. Finally, the effect of intercell time-sharing protocols as suggested by Shamai and Wyner (1997) is also examined, and a significant system performance enhancement is observed.

Original language	English
Pages (from-to)	1556-1569
Number of pages	14
Journal	IEEE Journal on Selected Areas in Communications
Volume	19
Issue number	8
DOIs	https://doi.org/10.1109/49.942517
State	Published - Aug 2001
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported by JSPS KAKENHI (JP16K10177) and the NIHR UCLH Biomedical Research center (BRC84/CN/SB/5984). The funding sources had no role in the study design, data collection, data analysis, data interpretation, and writing of the report.

Funding

Manuscript received December 13, 2000; revised May 10, 2001. The work of S. Shamai (Shitz) and S. Verdú was supported by the US-Israel Binational Science Foundation. The work of Sergio Verdú was supported also by the National Science Foundation under Grant NCR-0074277. This paper was presented in part at the 37th Allerton Conference, Monticello, IL, September 1999, and at the 21st IEEE Israel Conference, Tel-Aviv, Israel, April 2000.

Funders	Funder number
US-Israel Binational Science Foundation
National Science Foundation	NCR-0074277

Keywords

Capacity
Cellular communication
Code-division multiple access
Multiuser detection
Random signatures
Spectral efficiency

Access to Document

10.1109/49.942517

Cite this

@article{51d349d8110c4300a111f5045a1cb234,

title = "Multicell uplink spectral efficiency of coded DS-CDMA with random signatures",

abstract = "A simple multicell uplink communication model is suggested and analyzed for optimally coded randomly spread direct sequence code-division multiple access (DS-CDMA). The model adheres to Wyner's (1994) infinite linear cell-array model, according to which only adjacent-cell interference is present, and characterized by a single parameter 0 ≤ α ≤ 1. The discussion is confined to asymptotic analysis where both the number of users and the processing gain go to infinity, while their ratio goes to some finite constant. Single cell-site processing is assumed and four multiuser detection strategies are considered: the matched-filter detector, {"}optimum{"} detection with adjacent-cell interference treated as Gaussian noise, the linear minimum mean square error (MMSE) detector, and a detector that performs MMSE-based successive interference cancellation for intracell users with linear MMSE processing of adjacent-cell interference. Spectral efficiency is evaluated under three power allocation poli cies: equal received powers (for all users), equal rates, and a maximal spectral efficiency policy. Comparative results demonstrate how performance is affected by the introduction of intercell interference, and what is the penalty associated with the randomly spread coded DS-CDMA strategy. Finally, the effect of intercell time-sharing protocols as suggested by Shamai and Wyner (1997) is also examined, and a significant system performance enhancement is observed.",

keywords = "Capacity, Cellular communication, Code-division multiple access, Multiuser detection, Random signatures, Spectral efficiency",

author = "Zaidel, {Benjamin M.} and Shlomo Shamai and Sergio Verd{\'u}",

note = "Funding Information: This work was supported by JSPS KAKENHI (JP16K10177) and the NIHR UCLH Biomedical Research center (BRC84/CN/SB/5984). The funding sources had no role in the study design, data collection, data analysis, data interpretation, and writing of the report. ",

year = "2001",

month = aug,

doi = "10.1109/49.942517",

language = "אנגלית",

volume = "19",

pages = "1556--1569",

journal = "IEEE Journal on Selected Areas in Communications",

issn = "0733-8716",

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

number = "8",

}

TY - JOUR

T1 - Multicell uplink spectral efficiency of coded DS-CDMA with random signatures

AU - Zaidel, Benjamin M.

AU - Shamai, Shlomo

AU - Verdú, Sergio

N1 - Funding Information: This work was supported by JSPS KAKENHI (JP16K10177) and the NIHR UCLH Biomedical Research center (BRC84/CN/SB/5984). The funding sources had no role in the study design, data collection, data analysis, data interpretation, and writing of the report.

PY - 2001/8

Y1 - 2001/8

N2 - A simple multicell uplink communication model is suggested and analyzed for optimally coded randomly spread direct sequence code-division multiple access (DS-CDMA). The model adheres to Wyner's (1994) infinite linear cell-array model, according to which only adjacent-cell interference is present, and characterized by a single parameter 0 ≤ α ≤ 1. The discussion is confined to asymptotic analysis where both the number of users and the processing gain go to infinity, while their ratio goes to some finite constant. Single cell-site processing is assumed and four multiuser detection strategies are considered: the matched-filter detector, "optimum" detection with adjacent-cell interference treated as Gaussian noise, the linear minimum mean square error (MMSE) detector, and a detector that performs MMSE-based successive interference cancellation for intracell users with linear MMSE processing of adjacent-cell interference. Spectral efficiency is evaluated under three power allocation poli cies: equal received powers (for all users), equal rates, and a maximal spectral efficiency policy. Comparative results demonstrate how performance is affected by the introduction of intercell interference, and what is the penalty associated with the randomly spread coded DS-CDMA strategy. Finally, the effect of intercell time-sharing protocols as suggested by Shamai and Wyner (1997) is also examined, and a significant system performance enhancement is observed.

AB - A simple multicell uplink communication model is suggested and analyzed for optimally coded randomly spread direct sequence code-division multiple access (DS-CDMA). The model adheres to Wyner's (1994) infinite linear cell-array model, according to which only adjacent-cell interference is present, and characterized by a single parameter 0 ≤ α ≤ 1. The discussion is confined to asymptotic analysis where both the number of users and the processing gain go to infinity, while their ratio goes to some finite constant. Single cell-site processing is assumed and four multiuser detection strategies are considered: the matched-filter detector, "optimum" detection with adjacent-cell interference treated as Gaussian noise, the linear minimum mean square error (MMSE) detector, and a detector that performs MMSE-based successive interference cancellation for intracell users with linear MMSE processing of adjacent-cell interference. Spectral efficiency is evaluated under three power allocation poli cies: equal received powers (for all users), equal rates, and a maximal spectral efficiency policy. Comparative results demonstrate how performance is affected by the introduction of intercell interference, and what is the penalty associated with the randomly spread coded DS-CDMA strategy. Finally, the effect of intercell time-sharing protocols as suggested by Shamai and Wyner (1997) is also examined, and a significant system performance enhancement is observed.

KW - Capacity

KW - Cellular communication

KW - Code-division multiple access

KW - Multiuser detection

KW - Random signatures

KW - Spectral efficiency

UR - http://www.scopus.com/inward/record.url?scp=0035416793&partnerID=8YFLogxK

U2 - 10.1109/49.942517

DO - 10.1109/49.942517

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:0035416793

SN - 0733-8716

VL - 19

SP - 1556

EP - 1569

JO - IEEE Journal on Selected Areas in Communications

JF - IEEE Journal on Selected Areas in Communications

IS - 8

ER -

Multicell uplink spectral efficiency of coded DS-CDMA with random signatures

Abstract

Bibliographical note

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this