Title :
High-throughput, high-performance OFDM via pseudo-orthogonal carrier interferometry spreading codes
Author :
Wiegandt, David A. ; Wu, Zhiqiang ; Nassar, Carl R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Colorado State Univ., Fort Collins, CO, USA
fDate :
7/1/2003 12:00:00 AM
Abstract :
The paper introduces to orthogonal frequency-division multiplexing (OFDM) systems a novel pseudo-orthogonal carrier interferometry spreading code which spreads each parallel data stream over all the OFDM carriers. Pseudo-orthogonal carrier interferometry (PO-CI) spreading codes are carefully selected to introduce the following benefits to OFDM: up to 2N parallel data streams can be coded onto N carriers, with little degradation in performance; when rate 1/2 channel coding is applied in addition to PO-CI spreading codes, the resulting binary phase-shift keying OFDM systems demonstrate the performance of coded OFDM and the throughput of uncoded OFDM; PO-CI codes are carefully selected to spread in a manner which eliminates the peak-to-average power ratio problems characteristic of traditional OFDM.
Keywords :
OFDM modulation; channel coding; spread spectrum communication; OFDM; binary phase-shift keying; channel coding; orthogonal frequency-division multiplexing; parallel data streams; peak-to-average power ratio; pseudo-orthogonal carrier interferometry spreading codes; spread spectrum communication; throughput; Bandwidth; Channel coding; Degradation; Frequency division multiplexing; Mobile communication; OFDM; Peak to average power ratio; Phase shifting interferometry; TV broadcasting; Throughput;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2003.814196
