A performance study of Multiframe Interleaving for CDMA2000 1X cellular system

Multiframe Interleaving (MFI) is the support of 40 and 80ms supplemental channel frames for CDMA2000 1X. Longer frames improve interleaver performance by separating adjacent symbols further in time and thus require less E[sub]b/N[sub]t, in burst noise conditions, to maintain a target FER at a given data rate. The overall benefit is to improve throughput capacity for today's high bandwidth cellular services. This thesis analyzes the average power usage and data throughput with longer frames for various channel models and radio configurations. Through experimental and simulative testing in a laboratory setting, MFI is shown to use less power per unit of throughput at the link layer in slow fading, single path channel environments. However, gains over 20ms frames diminish for faster fading and multipath, and the limitation of the forward link scheduler in accurately predicting channel conditions handicaps any gains at the link level.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2004

Author dc:creator

• Cen, Jia Fu, 1981-

Advisor dc:contributor.advisor

• Walid Hamdy and Dina Katabi.

• Electrical Engineering and Computer Science.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/16677

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/16677