Title :
Effects of Spreading and Training on Capacity in Overloaded CDMA
Author :
Ponnaluri, Satya Prakash ; Guess, Tommy
Author_Institution :
Univ. of Virginia, Charlottesville
fDate :
4/1/2008 12:00:00 AM
Abstract :
We address the issue of sum-capacity in an overloaded, uplink, synchronous CDMA system in a quasi-static fading environment. Part of each fading block is reserved for channel training and the remainder of the block is used for data transmission. We evaluate bounds on sum-capacity using the estimates from channel estimation, and consider the effects on the lower bound caused by the spreading-coding-training tradeoff.
Keywords :
cellular radio; channel estimation; code division multiple access; fading channels; cellular code-division multiple access; channel estimation; code division multiple access; data transmission; overloaded uplink synchronous CDMA system; quasistatic fading environment; spreading sequences; spreading-coding-training tradeoff; sum-capacity bounds; training sequences; Bandwidth; Channel estimation; Code division multiplexing; Communications Society; Data communication; Fading; Multiaccess communication; Throughput; Transmitting antennas; Wireless communication;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2008.050243
