Title :
Adaptive processing gain data with space diversity and truncated ARQ in presence of soft handoff in cellular CDMA
Author :
Das, Dipta ; Kundu, Sumit
Author_Institution :
Dept. of Electron. & Commun. Engg, Dr. B.C. Roy Eng. Coll., Durgapur
Abstract :
An adaptive data transmission scheme based on variable spreading gain (VSG) is studied in CDMA network in presence of soft handoff and space diversity. The processing gain is varied according to traffic intensity meeting a requirement on bit error rate (BER) at the output of a space diversity system provided by antenna array. Truncated automatic repeat request (T-ARQ) is used in link layer to further improve the performance. The joint impact of soft handoff and space diversity on processing gain adaptation is studied. The overall performance improvement due to VSG based transmission in presence of soft handoff and space diversity at physical layer and T-ARQ at link layer is evaluated. A variable packet size scheme is also studied to meet packet loss constraint.
Keywords :
antenna arrays; automatic repeat request; cellular radio; code division multiple access; diversity reception; error statistics; telecommunication traffic; BER; adaptive data transmission scheme; adaptive processing gain; antenna array; automatic repeat request; bit error rate; cellular CDMA; soft handoff mechanism; space diversity; traffic intensity; truncated ARQ; variable spreading gain; Adaptive arrays; Antenna arrays; Automatic repeat request; Data communication; Diversity reception; Gain; Multiaccess communication; Physical layer; Quality of service; Throughput; Adaptive systems; soft handoff; space diversity; variable spreading gain;
Conference_Titel :
TENCON 2008 - 2008 IEEE Region 10 Conference
Conference_Location :
Hyderabad
Print_ISBN :
978-1-4244-2408-5
Electronic_ISBN :
978-1-4244-2409-2
DOI :
10.1109/TENCON.2008.4766455
