Performance of multi-user codes in wireless communications

Multi-user codes are a widely used in transmitting user data from base station to mobile station and vice versa. In wireless communications a signal received by a mobile station goes through different fading channels resulting. These multi-paths add constructively and destructively with different delays and attenuation at the mobile station. The autocorrelation and cross correlation properties of the Multi-user codes play a significant role in extracting the user data from the signal corrupted by multipath fading channel. The thesis presents a comparison of different Multi-user codes based on their autocorrelation and cross correlation properties. These codes are passed through a multipath fading models and their performance is evaluated based on the Bit Error Rate (BER). The performance for the Multi-user codes is compared both in synchronous and asynchronous mode of transmission to the base station. The model used for simulating multipath fading channel is Clark model.

Name thesis:degree_name

Master of Science in Electrical Engineering - (M.S.)

Discipline thesis:degree_discipline

Electrical and Computer Engineering

Year

2005

Author dc:creator

• Ulislam, Muhammad Tauseef

Contributors dc:contributor

• Ali N. Akansu
• Alexander Haimovich
• Yun Q. Shi

• Wireless networks
• Multi path fading models
• Multi-user codes
• Electrical and Electronics

Repository record dc:identifier

https://digitalcommons.njit.edu/theses/486

OAI identifier oai:identifier

oai:digitalcommons.njit.edu:theses-1485