Omkar Chowdary - Academia.edu (original) (raw)

Omkar Chowdary

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Papers by Omkar Chowdary

Research paper thumbnail of Design and Analysis of DS-CDMA RAKE Receiver Simulator for Wireless Communication

Devices and …, Jan 1, 2011

Abstract This paper develops a software wireless communication simulator which simulates a Code D... more Abstract This paper develops a software wireless communication simulator which simulates a Code Division Multiple Access (CDMA). CDMA is a popular technology in cellular systems due to its superior capacity and performance. The simulator is a tool to evaluate these ...

Research paper thumbnail of Design and performance of multicarrier CDMA system in frequency-selective Rayleigh fading channels

Vehicular Technology, IEEE Transactions …, Jan 1, 1999

This paper presents the advantages and disadvantages of a multicarrier code-division multiple-acc... more This paper presents the advantages and disadvantages of a multicarrier code-division multiple-access (MC-CDMA) system. The transmitter/receiver structure and the bandwidth of transmitted signal spectrum are compared with those of a conventional direct-sequence (DS) CDMA system, and an MC-CDMA design method, how to determine the number of subcarriers and the length of guard interval is discussed. The bit error rate (BER) lower bounds for DS-CDMA and MA-CDMA systems are derived and their equivalence is theoretically demonstrated. Finally, the BER performance in downlink and uplink channels with frequency-selective Rayleigh fading is shown by computer simulation.

Research paper thumbnail of Design and Analysis of DS-CDMA RAKE Receiver Simulator for Wireless Communication

Devices and …, Jan 1, 2011

Abstract This paper develops a software wireless communication simulator which simulates a Code D... more Abstract This paper develops a software wireless communication simulator which simulates a Code Division Multiple Access (CDMA). CDMA is a popular technology in cellular systems due to its superior capacity and performance. The simulator is a tool to evaluate these ...

Research paper thumbnail of Design and performance of multicarrier CDMA system in frequency-selective Rayleigh fading channels

Vehicular Technology, IEEE Transactions …, Jan 1, 1999

This paper presents the advantages and disadvantages of a multicarrier code-division multiple-acc... more This paper presents the advantages and disadvantages of a multicarrier code-division multiple-access (MC-CDMA) system. The transmitter/receiver structure and the bandwidth of transmitted signal spectrum are compared with those of a conventional direct-sequence (DS) CDMA system, and an MC-CDMA design method, how to determine the number of subcarriers and the length of guard interval is discussed. The bit error rate (BER) lower bounds for DS-CDMA and MA-CDMA systems are derived and their equivalence is theoretically demonstrated. Finally, the BER performance in downlink and uplink channels with frequency-selective Rayleigh fading is shown by computer simulation.

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