Title :
Performance Evaluation and Comparison between Iterative DS-CDMA and NDMA
Author :
Ganhao, F. ; Dinis, Rui ; Bernardo, Luis ; Oliveira, Rodolfo
Author_Institution :
Dept. de Eng. Electrotec., Univ. Nova de Lisboa, Caparica, Portugal
Abstract :
Multipacket Reception (MPR) techniques employing either Direct Sequence Code Division Multiple Access (DS- CDMA) or Network Diversity Multiple Access (NDMA) have great potential to deal with packet collisions from multiple Mobile Terminals (MTs). However, their performance evaluation in prac- tical systems is difficult because lengthy simulations are needed to obtain the packet error rates for specific channel conditions. This paper considers MPR receivers based on the Iterative Block Decision Feedback Equalization (IB-DFE) concept. An analytical tool that computes the Bit Error Rate (BER) and Packet Error Rate (PER) for DS-CDMA is proposed, where its theoretical results have a good accuracy. This analytical approach, that provides a simple and relatively fast way to compute the BER and PER performance for DS-CDMA, is then employed for a comparison with NDMA.
Keywords :
code division multiple access; decision feedback equalisers; error statistics; iterative methods; spread spectrum communication; BER; IB-DFE; MPR; MT; NDMA; PER; bit error rate; direct sequence code division multiple access; iterative DS-CDMA; iterative block decision feedback equalization; mobile terminals; multipacket reception; network diversity multiple access; packet collisions; packet error rate; performance evaluation; Analytical models; Bit error rate; Frequency domain analysis; Load modeling; Multiaccess communication; Receivers; Throughput;
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2012 IEEE
Conference_Location :
Quebec City, QC
Print_ISBN :
978-1-4673-1880-8
Electronic_ISBN :
1090-3038
DOI :
10.1109/VTCFall.2012.6398934