Unitary Differential Space-Time Modulation with Joint Modulation

Computer Science – Information Theory

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

We develop two new designs of unitary differential space-time modulation (DSTM) with low decoding complexity. Their decoder can be separated into a few parallel decoders, each of which has a decoding search space of less than sqrt(N) if the DSTM codebook contains N codewords. Both designs are based on the concept of joint modulation, which means that several information symbols are jointly modulated, unlike the conventional symbol-by-symbol modulation. The first design is based on Orthogonal Space-Time Block Code (O-STBC) with joint constellation constructed from spherical codes. The second design is based on Quasi-Orthogonal Space-Time Block Code (QO-STBC) with specially designed pair-wise constellation sets. Both the proposed unitary DSTM schemes have considerably lower decoding complexity than many prior DSTM schemes, including those based on Group Codes and Sp(2) which generally have a decoding search space of N for a codebook size of N codewords, and much better decoding performance than the existing O-STBC DSTM scheme. Between two designs, the proposed DSTM based on O-STBC generally has better decoding performance, while the proposed DSTM based on QO-STBC has lower decoding complexity when 8 transmit antennas.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Unitary Differential Space-Time Modulation with Joint Modulation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Unitary Differential Space-Time Modulation with Joint Modulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unitary Differential Space-Time Modulation with Joint Modulation will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-370903

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.