A New Approach to Multiple Antenna Systems
Dimitrie C. Popescu, Christopher James Rose · 2001
A new approach to multiple antenna systems is presented based on a multicarrier modulation scheme at each transmit antenna with sinusoids as carriers. A matrix model of the MIMO channel is developed and analyzed. Analysis is performed using singular value decomposition and the dimensionality of the problem is reduced only to those dimensions of the signal space that can actually carry information. A set of bits is transmitted over the MIMO channel in parallel by assigning different codewords to each bit in the set similar to the way codewords are assigned to different users in a CDMA system. Optimal codewords can be obtained by application of interference avoidance methods. The corresponding optimal linear receiver structure is a set of matched filters. Keywords: multiple antennas, MIMO channel, CDMA, multicarrier modulation. Popescu and Rose: A New Approach to Multiple Antenna Systems 2 1 Introduction The increasing demand for high data rate wireless communications has motivated ...